Volume 87, Issue 6 , Pages 826-831, June 2006
An Analysis of the Feasibility of Home Rehabilitation Among Elderly People With Proximal Femoral Fractures
Article Outline
Abstract
Giusti A, Barone A, Oliveri M, Pizzonia M, Razzano M, Palummeri E, Pioli G. An analysis of the feasibility of home rehabilitation among elderly people with proximal femoral fractures.
Objective
To evaluate the feasibility and predictors of success of home-based rehabilitation (HBR) in older adults after hip fracture.
Design
Prospective inception cohort study with 12 months of follow-up.
Setting
Acute and subacute care with follow-up in a community setting in Italy.
Participants
Community-dwelling older adults (N=199) aged 70 years or older, discharged from an acute orthopedic unit after repair of a nontraumatic proximal femoral fracture.
Interventions
Patients’ choice of pursuing HBR or institutional-based rehabilitation (IBR).
Main Outcome Measures
Proportion of subjects discharged home for rehabilitation. Rates of institutionalization assessed at 3, 6, and 12 months postdischarge. Mean changes of the Barthel Index from baseline and proportion of subjects who regained their prefracture levels of function at the time of follow-up in the 2 intervention groups (HBR, IBR).
Results
Ninety-nine (49.7%) patients chose HBR, and the rest (50.3%) were discharged to a rehabilitation facility. With regard to the baseline characteristics, the 2 patient groups (HBR, IBR) differed with respect to living arrangement (P≤.001), prefracture functional status in basic (Barthel Index, P=.033; Katz Index, P=.041) and instrumental activities of daily living (IADLs) (P=.041), and occurrence of delirium (P=.022). During the follow-up, the number of subjects institutionalized at 3, 6, and 12 months was 52, 26, and 22, respectively. In the multiple logistic regression model, the only significant variable affecting the choice of IBR at discharge was the absence of relatives at home (odds ratio [OR], 6.7; 95% confidence interval [CI], 3.33–13.46; P≤.001), whereas a prefracture functional impairment in more than 3 IADLs (at 12mo: OR=3.99; 95% CI, 1.57–10.18; P=.004), the absence of relatives at home (at 12mo: OR=8.81; 95% CI, 2.47–31.46; P=.001), and delay to surgery longer than 3 days (at 12 mo: OR=5.51; 95% CI, 1.28–23.81; P=.022) resulted in significant risk factors for long-term institutionalization. Compared with subjects who received traditional rehabilitation, those discharged home showed—after controlling for prefracture Barthel Index score, IADLs, cognitive status and age—a slightly lower functional decline and a higher rate of recovery during the follow-up (mean change in Barthel Index score ± standard deviation at 12mo: HBR, −11.2±24.7 vs IBR, −23.7±28.5; P=.015).
Conclusions
In an unselected population of hip-fractured older adults previously living in the community, HBR seems to be a feasible alternative to IBR in those subjects living with relatives.
Key Words: Elderly , Hip fracture , Home care services , Rehabilitation
HIP FRACTURE IS AMONG the most common causes of acute hospitalization in the elderly and is associated with significant mortality, institutionalization, and loss of function.1, 2, 3, 4, 5, 6 Previous studies reported a sustained decline in physical function and walking ability in the elderly who survive the first year after hip fracture.2, 3, 4 In addition, Braithwaite et al1 estimated that these patients spent about 17% of their remaining life in a nursing facility, 12% of which was attributable to hip fracture. It is therefore essential to understand the factors that may influence functional decline and long-term institutionalization after hip fracture. Although the literature is varied, old age, male sex, poor prefracture physical and cognitive function, and social impairment were consistently found to be related to such negative outcomes.5, 6, 7, 8, 9 In particular, previous studies highlighted the importance of psychosocial factors for recovery after hip fracture and reported a positive effect of the presence of relatives on the improvement of walking ability during the follow-up.7, 8, 9
Despite the fact that several approaches have been proposed to prevent progression of disability and to maximize functional recovery after hip fracture, the optimal rehabilitation site is still uncertain.10, 11, 12, 13 In recent years, the development of home-based rehabilitation (HBR) programs in Europe, Australia, and North America have provided a supposedly safer and more cost-effective alternative to traditional rehabilitation.14, 15, 16
Considering their potential advantages, home care services seem to be underutilized in developed countries, as reported by Jarman et al,17 who observed a very low proportion of patients discharged home after hip fracture. Two recently published randomized controlled trials15, 16 (RCTs) reported that HBR and institutional-based rehabilitation (IBR) in elderly patients after hip fracture produce comparable results in terms of functional outcomes. However, these studies excluded patients with prefracture cognitive or functional impairment and those living alone at the time of hospital admission and were characterized by a relatively small sample. Because patients with premorbid cognitive decline or disability are a significant proportion of the hip-fractured elderly,18, 19 it remains uncertain whether the abovementioned conclusions correctly reflect the unbiased population, and in particular, if those patients with a higher degree of frailty may benefit from an HBR program.
The main purpose of the present study was to analyze the feasibility of an HBR program for an unselected population of older adults, originally living at home, who were hospitalized for hip fracture, to identify factors that affect the choice of the rehabilitation setting (HBR vs IBR) and to compare the effectiveness of the 2 rehabilitation programs. We also investigated some prefracture characteristics of the patients and events occurring during the hospital stay that may serve as significant predictors for long-term institutionalization after hip fracture.
Methods
Participants
All hip-fractured patients consecutively admitted to the Genoa Galliera Hospital, Genoa, Italy, between November 1, 2000, and November 1, 2001, were eligible for inclusion in the study if they were at least 70 years old, were living in the community at the time of fracture, had surgical stabilization of the fracture, and were discharged alive. Patients with a fracture due to secondary causes (metastatic cancer, Paget’s disease of the bone), those living in a nursing home at the time of fracture, and those who refused to give informed consent (follow-up and in-hospital interviews) were excluded. The hospital’s ethics committee reviewed and approved the study protocol. When the subjects were too confused to understand the informed consent process, proxy consent was obtained.
Baseline Evaluation and Discharge Procedure
Baseline data were collected through a comprehensive geriatric assessment performed by a physician within 18 hours of admission. Demographic information included age, sex, and living arrangements defined as either living alone or with spouses or other family members. Prefracture functional status (2wk before) was measured both for basic (BADLs) and instrumental activities of daily living (IADLs) using the Barthel Index (score range, 0–100) and the Katz Index (score range, 0–6) for the BADLs and the Lawton Index (score range, 0–8) for the IADLs.20, 21, 22, 23 Cognitive status was assessed by the Short Portable Mental Status Questionnaire (SPMSQ) (score range, 0–10).24 Medical burden and severity of illness were measured using the Cumulative Illness Rating Scale (CIRS) and the Acute Physiology and Chronic Health Evaluation II scale (APACHE II) (score range, 0–71).25, 26 When a subject was too ill or cognitively compromised, data were obtained from a proxy. Information collected during hospital stay included medical complications, occurrence of delirium, type of fracture, and time to surgery. After surgical treatment, a geriatric-care nurse with each patient and his/her proxies developed a discharge plan, including the choice of rehabilitation setting. Patients and their proxies were given detailed information about home rehabilitation services and skilled rehabilitation facilities available in the area. The decision whether patients were discharged to a home care program or to rehabilitation facilities was made by the patients themselves and/or their families. Both HBR and IBR were provided by the health care system. The specific content and duration of the training program therapy, for both home and institutional patients, were left to the discretion of the individual therapists. Usually physical therapists provided strengthening and range-of-motion exercises and instructed their patients in gait and transfer training.
The proportion of subjects discharged home was recorded and used to assess feasibility.
Follow-Up and Outcome Variables
A telephone follow-up interview was conducted at 3, 6, and 12 months after hospital admission to assess the functional status in BADLs and the placement of patients (home vs institution). For this purpose, a telephone questionnaire was designed using the items of the Barthel Index adapted for a telephone interview with an additional question regarding the placement of patients (place of residence at each point of follow-up). To compare the effectiveness of the 2 rehabilitation settings (HBR vs IBR), 2 estimators were taken into consideration. The first was the mean change of the Barthel Index score from baseline (prefracture functional status) at the times of follow-up. The second was the proportion of patients who regained their respective prefracture levels of functional ability, measured through the Katz Index, at 3, 6, and 12 months from discharge.
The subjects institutionalized at 3, 6, and 12 months were recorded to examine the relation between the baseline characteristics of patients and the risk of long-term institutionalization.
Statistical Analysis
Descriptive statistics were used to identify baseline characteristics of patients treated at home and of those treated in the institution: categoric variables were expressed in percentages and continuous variables were reported as mean ± standard deviation (SD). Baseline functional, clinical, and demographic characteristics between the 2 groups were compared using unpaired t tests (for continuous variables) or chi-square tests (for categoric variables).
Bivariate and multivariate analyses were performed to identify the factors that affected the choice of rehabilitation setting and the predictors of long-term institutionalization. The dependent variable was the cumulative institutionalization, expressed as a binary value, at each time point (discharge, 3mo, 6mo, 1y). All the independent variables were expressed as categoric variables. Categories were selected on the basis of their clinical significance or distribution (25th and 75th percentiles) as follows: age (70–75y, 76–85y, >85y), sex (man, woman), Barthel Index score (0–49, 50–90, 91–100), Katz Index score (0–2, 3–4, 5–6), Lawton Index score (0–3, 4–6, 7–8), APACHE II score (0–2, 3–5, >6), SPMSQ score (0–4, 5–7, 8–10), CIRS comorbidity index subscore (1–2, 3–4, >4), CIRS severity index subscore (<1.5, 1.5–1.9, >1.9), living situation (living alone, cohabitation), time to surgery (0–3d, >3d), type of fracture (femoral neck, pertrochanteric), occurrence of delirium (yes, no), and medical complications (yes, no). First, we analyzed the bivariate association between the outcome and each of the categoric independent variables by nonparametric Mann-Whitney U test or Kruskal-Wallis test depending on the number of categories. Then, a logistic regression analysis was performed to examine the relation between the outcome and the independent variables that were significant in the bivariate analysis.
To compare the effectiveness of rehabilitation between the 2 groups the mean changes of the Barthel Index scores over the course of the study were analyzed using repeated-measures analysis of variance (ANOVA) with outcome group (HBR vs IBR) as grouping factor. The focus of the analysis was on the significance of the interaction between group and time, which tested hypotheses regarding the equality of changes over time in the 2 groups. Then the change score was calculated by subtracting the prefracture score from that at 3, 6, and 12 months. The difference in the score between groups was examined using analysis of covariance (ANCOVA) with baseline scores of the Barthel Index, Lawton Index, SPMSQ, CIRS comorbidity index, and age as covariates. The Katz Index was used to evaluate functional recovery. Patients who attained prefracture scores at each point of follow-up were considered to have gained complete recovery regardless of the prefracture level. To calculate the percentage of subjects with complete recovery, those with prefracture Katz Index scores of 0 were excluded.
All comparisons were 2-tailed and significance was set at P less than .05. Odds ratios (ORs), 95% confidence intervals (CIs), and P values were calculated using standard formulae. Statistical analysis was performed using SPSSa for Windows.
Results
Between November 1, 2000, and November 1, 2001, 248 patients were admitted to the Galliera Hospital with a fracture of the proximal femur. Twelve died during hospital stay and 37 of those surviving were living in a nursing home at the time of fracture. One hundred ninety-nine subjects living at home were discharged, but 5 refused to give informed consent or dropped out during follow-up. The data refer to 194 subjects who completed the baseline assessment and the follow-up interview.
The participants averaged 83.6±6 years old, and 14.5% were men. Ninety-five (49%) patients were discharged directly home for rehabilitation, and for the rest (99 [51%]), rehabilitation was provided in an institution. At 3, 6, and 12 months, the number of surviving subjects was 178, 167, and 158, respectively, and the number of subjects institutionalized was 52 (29%), 26 (16%), and 22 (14%), respectively.
The baseline demographic, functional, and clinical characteristics of patients treated at home (HBR) and of those discharged to a rehabilitation facility (IBR) are shown in table 1. The 2 groups were similar, except for the proportion of subjects living alone at the time of fracture (home, 23.2% vs institution, 62%; P≤.001), prefracture functional status in BADLs (eg, mean Barthel Index score: HBR, 85.5±23.4 vs IBR, 82.4±22.6; P=.033), IADLs (mean Lawton Index score: HBR, 11.5±6.7 vs IBR, 9.8±6.2; P=.041), and occurrence of delirium (HBR, 29.2% vs IBR, 45%; P=.022).
Table 1. Baseline Demographics and Functional and Clinical Characteristics of the Patients by Setting of Rehabilitation Program
| Variable | HBR | IBR | P |
|---|---|---|---|
| No. of subjects (%) | 95 | 99 | NA |
| Mean age ± SD (y) | 82.5±6.3 | 83.5±6.7 | .375 |
| Male (%) | 16 | 13 | .528 |
| Pertrochanteric fracture (%) | 55 | 49 | .356 |
| In-hospital complications (%)⁎ | 55 | 60 | .438 |
| Delirium (%)† | 29 | 45 | .022 |
| Pressure ulcers > stage I (%)‡ | 31 | 41 | .156 |
| Subjects living alone (%) | 23 | 62 | <.001 |
| Mean APACHE II acute physiology scale score ± SD | 8.7±3.4 | 8.8±2.9 | .979 |
| Mean CIRS comorbidity index score ± SD | 3.4±1.6 | 3.5±1.7 | .608 |
| Mean Barthel Index score ± SD | 85.5±23.4 | 82.4±22.6 | .033 |
| Mean Katz Index score ± SD | 4.7±1.8 | 4.3±1.9 | .041 |
| Subjects with Katz Index score of 0, n (%)§ | 8 | 7 | .333 |
| Mean Lawton Index score ± SD | 11.5±6.7 | 9.8±6.2 | .041 |
| Mean SPMSQ ± SD | 6.9±3.0 | 6.5±2.5 | .063 |
⁎ Percentage of subjects with at least 1 in-hospital complication. |
† Percentage of subjects with at least 1 episode of in-hospital delirium. |
‡ Percentage of subjects with at least 1 pressure ulcer greater than stage 1 during in-hospital stay. |
§ Subjects dependent in all activities of daily living. |
Risk factors for short- and long-term institutionalization (univariate analysis) are shown in table 2. The only factors associated with discharge to the rehabilitation facility were the living situation and the occurrence of delirium during hospital stay. At 3, 6, and 12 months, other factors became significantly related to the risk of long-term institutionalization: living alone, old age, premorbid functional status in BADLs and IADLs, delay to surgery, occurrence of delirium, and poor cognitive status.
Table 2. Univariate Analysis
| Variable | Discharge | 3 Months | 6 Months | 12 Months | ||||
|---|---|---|---|---|---|---|---|---|
| %⁎ | P | %⁎ | P | %⁎ | P | %⁎ | P | |
| Age (y) | .271 | .199 | .196 | .036 | ||||
| 44.0 | 29.2 | 17.4 | 9.5 | |||||
| 47.9 | 23.0 | 14.0 | 12.2 | |||||
| 57.5 | 35.8 | 23.5 | 25.4 | |||||
| Sex | .510 | .771 | .653 | .665 | ||||
| 44.8 | 29.0 | 16.6 | 13.6 | |||||
| 51.2 | 26.1 | 18.3 | 17.4 | |||||
| Barthel Index score† | .134 | .199 | .011 | .005 | ||||
| 52.9 | 41.2 | 33.3 | 28.6 | |||||
| 60.6 | 30.9 | 26.3 | 28.8 | |||||
| 45.0 | 25.5 | 11.0 | 9.3 | |||||
| Katz Index score† | .110 | .099 | .019 | .003 | ||||
| 65.6 | 41.4 | 34.6 | 36.0 | |||||
| 54.5 | 30.8 | 32.1 | 25.0 | |||||
| 46.5 | 25.2 | 12.7 | 10.6 | |||||
| Lawton Index score† | .100 | <.001 | <.001 | <.001 | ||||
| 56.6 | 42.3 | 32.8 | 34.4 | |||||
| 55.3 | 30.2 | 17.1 | 15.4 | |||||
| 39.7 | 11.1 | 3.2 | 1.6 | |||||
| APACHE II acute physiology scale score | .629 | .372 | .853 | .335 | ||||
| 48.5 | 31.1 | 17.5 | 15.1 | |||||
| 52.4 | 25.0 | 20.0 | 20.0 | |||||
| 61.1 | 23.1 | 23.1 | 33.3 | |||||
| SPMSQ score‡ | .115 | .002 | .003 | .002 | ||||
| 52.6 | 37.9 | 33.3 | 34.6 | |||||
| 60.0 | 41.1 | 25.5 | 26.5 | |||||
| 43.3 | 17.4 | 9.0 | 8.0 | |||||
| CIRS comorbidity index score‡ | .950 | .627 | .184 | .688 | ||||
| 49.2 | 25.4 | 12.1 | 15.5 | |||||
| 51.1 | 30.9 | 18.5 | 19.5 | |||||
| 52.2 | 28.9 | 27.0 | 13.3 | |||||
| CIRS severity index score‡ | .415 | .436 | .248 | .998 | ||||
| 44.4 | 27.9 | 11.6 | 14.0 | |||||
| 50.9 | 26.2 | 14.4 | 14.3 | |||||
| 59.0 | 37.5 | 26.9 | 13.0 | |||||
| Social support | <.001 | <.001 | <.001 | <.001 | ||||
| 72.9 | 44.0 | 27.0 | 25.8 | |||||
| 33.3 | 17.5 | 8.0 | 5.3 | |||||
| Time to surgery (d) | .759 | .673 | .254 | .033 | ||||
| 50.0 | 27.6 | 11.3 | 5.9 | |||||
| 52.4 | 30.7 | 18.3 | 18.8 | |||||
| Fracture type | .356 | .125 | .394 | .372 | ||||
| 53.7 | 23.3 | 15.5 | 14.1 | |||||
| 47.1 | 33.7 | 20.4 | 19.3 | |||||
| Medical complications | .438 | .227 | .141 | .214 | ||||
| 52.6 | 32.3 | 21.8 | 20.0 | |||||
| 47.1 | 24.1 | 13.2 | 12.7 | |||||
| Delirium | .022 | .040 | .028 | .002 | ||||
| 44.0 | 23.5 | 13.3 | 10.3 | |||||
| 60.8 | 38.1 | 26.5 | 28.8 | |||||
⁎ Percentage of subjects discharged to an institution or living in a nursing facility at 3, 6, or 12 months that present the variable considered. |
† Functional status 2 weeks before the fracture. |
‡ Assessed within 18 hours from admission. |
These variables, significant in bivariate analysis, were included in a logistic regression model (table 3). On the basis of bivariate analysis, only 2 categories were considered for the Barthel Index (score 91–100, score <91) and the SPMSQ (score 8–10, score <8).
Table 3. Multivariate Analysis
| Variable (category) | Discharge | 3 Months | 6 Months | 12 Months | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OR | 95% CI | P | OR | 95% CI | P | OR | 95% CI | P | OR | 95% CI | P | |
| Age (y) (70–75, 76–85, >85) | 1.13 | 0.67–1.88 | .650 | 0.93 | 0.52–1.68 | .819 | 0.98 | 0.46–2.09 | .984 | 1.33 | 0.53–3.33 | .539 |
| Time to surgery (d) (0–3, >3) | 0.90 | 0.44–1.84 | .780 | 1.15 | 0.50–2.64 | .748 | 2.19 | 0.71–6.75 | .173 | 5.51 | 1.28–23.81 | .022 |
| Living alone (yes, no) | 6.70 | 3.33–13.46 | <.001 | 4.82 | 2.18–10.66 | <.001 | 5.20 | 1.87–14.45 | .002 | 8.81 | 2.47–31.46 | .001 |
| Barthel Index score (91–100, <91) | 1.48 | 0.86–2.57 | .160 | 0.80 | 0.45–1.41 | .438 | 1.12 | 0.57–2.21 | .746 | 1.35 | 0.61–3.00 | .451 |
| Lawton Index score (0–3, 4–6, 7–8) | 1.25 | 0.76–2.04 | .372 | 2.78 | 1.54–5.01 | .001 | 3.60 | 1.63–7.96 | .002 | 3.99 | 1.57–10.18 | .004 |
| Delirium (yes, no) | 1.02 | 0.47–2.23 | .953 | 0.79 | 0.33–1.91 | .601 | 0.59 | 0.19–1.87 | .371 | 0.93 | 0.25–3.48 | .909 |
| SPMSQ score (0–7, 8–10) | 0.96 | 0.56–1.64 | .878 | 1.49 | 0.81–2.75 | .195 | 1.21 | 0.56–2.61 | .634 | 1.29 | 0.49–3.36 | .607 |
The multivariate analysis showed that living situation was the only significant variable affecting the choice of a rehabilitation facility at discharge (OR=6.70; 95% CI, 3.33–13.46; P≤.001). The odds of being treated in an institution increased almost 7-fold for patients living alone compared with those living with relatives.
A prefracture functional impairment in IADLs and the living situation provided independent predictors of institutionalization at 3 and 6 months. These same variables together with time to surgery were significant at 1 year (see table 3).
During the follow-up, both groups showed a significant decline of functional ability (Barthel Index). Repeated-measures analysis showed that the HBR group had higher Barthel Index scores than the IBR group at follow-up (ANOVA group by time, P=.007). Barthel Index score decreased 10.8% for the HBR group from the prefracture level (85.5±23.4) to 12 months (76.2±32.1) and decreased 25.6% for the IBR group from the prefracture level (82.4±22.6) to 12 months (58.9.2±33.3). ANCOVA showed that differences in measures of the Barthel Index score by outcome group were maintained at 3, 6, and 12 months even after controlling for prefracture Barthel Index score, IADL, SPMSQ, and age (3mo, P=.017; 6mo, P=.001; 12mo, P=.015) (table 4). All covariates except age and comorbidity showed significant differences (Barthel Index prefracture scores, P=.001; SPMSQ, P=.001; IADL, P=.001; age, P=.828; CIRS comorbidity index, P=.222).
Table 4. Variations of the Barthel Index From Prefracture Levels and Rates of Subjects With Complete Recovery of Functional Ability at 3, 6, and 12 Months
| Months | HBR | IBR | P⁎ |
|---|---|---|---|
| Three | |||
| 89 | 89 | ||
| −13.8±20.3 | −23.6±26.4 | .017 | |
| 33 | 30 | .587‡ | |
| Six | |||
| 85 | 82 | ||
| −10.4±20.4 | −24.8±27.6 | .001 | |
| 36 | 24 | .056‡ | |
| Twelve | |||
| 81 | 77 | ||
| −11.2±24.7 | −23.7±28.5 | .015 | |
| 41 | 24 | .008‡ |
⁎ Effect of group placement (HBR vs IBR) based on ANCOVA, including baseline scores of Barthel Index, Lawton Index, SPMSQ, and CIRS comorbidity index and age as covariates. The P values of significant differences of the covariates are as follows: Barthel Index prefracture scores, P=.001; SPMSQ, P=.000; and IADL, P=.000. |
† Subjects who returned to the prefracture functional status in BADLs regardless of prefracture index score. Percentages were calculated on surviving subjects after excluding those with prefracture Katz Index scores of 0. |
‡ For this analysis, the covariates have not been included. |
Only 15 subjects were totally dependent (Katz Index score 0) before fracture (8 in the HBR group, 7 in the IBR group). These subjects were excluded from the calculation of the proportion who achieved complete recovery after rehabilitation. The number of patients with complete recovery was higher in the HBR group during the follow-up even if the differences between the groups were highly significant only at 12 months (52.7% in HBR vs 32.9% in IBR, P=.008).
Discussion
Feasibility
The present results provide support for the feasibility of HBR programs in real clinical practice. About half of the participants who were included in the present research consented to take part in the home rehabilitation program and were discharged directly home. These results are consistent with those of another work27 that reported a similar rate of participation. However, most previous studies usually excluded from home rehabilitation program patients with premorbid disability, dementia, and/or postoperative delirium or medical complications, and current literature discourages home rehabilitation in these kinds of patients.15, 16, 27 In the present study, we considered an unselected population of hip-fractured elderly. The large spectrum of inclusion criteria adopted allowed the enrollment of a heterogeneous sample of elderly patients. In fact, 20% of subjects discharged home were severely demented and 8% presented with a prefracture moderate to severe functional impairment in BADLs.
Nevertheless, patients in the HBR group presented with a slightly better health status, with a lower rate of in-hospital delirium and a lower degree of functional impairment in BADLs and IADLs, and a higher proportion of these patients were living at home with relatives. When we look at the factors affecting the choice of home rehabilitation, only the living situation (cohabitation) resulted as significant in a multivariate model, and no significant effect of prefracture functional status (for BADLs and IADLs) and/or delirium was found. Differences in population characteristics, exclusion criteria adopted, and study design may explain why social support appears to be less significant in other studies designed to assess the reasons for refusing home rehabilitation.27, 28
Subjects treated at home showed a slightly lower physical decline over the time of the follow-up and a higher rate of recovery compared with those who followed an institutional rehabilitation program. This positive effect of home rehabilitation remains significant after controlling for baseline differences in physical and cognitive status between the 2 groups, even if the lack of randomization and the skewed groups represent the main limitation of the study in terms of an assessment of the superiority of one or the other treatment.
The few existing studies on this topic suggest that HBR and IBR are comparable in terms of effectiveness, but because of the heterogeneity of the trials and the outcomes considered, there are no conclusive data.13, 15, 16
Our data show that even when patients with cognitive decline and premorbid disability are considered, HBR appears to be a feasible alternative in an unselected real-world population of elderly patients with hip fracture.
Long-Term Institutionalization
Over the follow-up, a high proportion of subjects of those originally discharged to rehabilitation facilities were institutionalized. After 12 months, the percentage was 14% (22 patients) of the total surviving population. These findings are consistent with other studies1, 5, 6 that reported a high rate of institutionalization up to 12 months postinjury in hip-fractured elderly. Cree et al5 reported an increased risk of institutionalization in patients with cognitive decline and advanced age but not in those with a preexisting impairment in BADLs. Other investigators6 found similar results. Fransen et al29 reported 7-fold increased odds of being institutionalized in men compared with women of the same age. In the present study, the large spectrum of covariates made it easier to distinguish the individual effect of the variables of interest on the outcome by controlling the possible influences of the other variables. In fact, several factors were significantly associated with the risk of long-term institutionalization in bivariate analysis, whereas in a multivariate model only prefracture functional status in IADLs, living situation, and time to surgery resulted as significant independent predictors of the adverse outcome considered. Although the absence of relatives at home was a significant predictor of early institutionalization, the coexistence of living alone with a preexisting disability was decisive for long-term institutionalization. Our findings showed that in models including both BADLs and IADLs, the latter was the most relevant, probably because even an early functional decline could affect long-term poor outcomes, which indirectly supports the hypothesis that IADL impairments represent a marker of frailty.30
Delay to surgery (defined as >48h) is a well-known risk factor for mortality and short- and long-term negative outcomes after hip fracture,31, 32, 33 but its adverse influence on return to the community was not shown in a previous study.34 In our study, this factor remains as an independent predictor for long-term institutionalization, even if it only becomes significant in the late phase of follow-up, probably because in the earlier period other factors have a greater effect.
Conclusions
A home rehabilitation program after hip fracture is feasible in about half of patients discharged after surgical repair and may represent an alternative to traditional rehabilitation in elderly patients living with relatives. The main limitation of this study is the lack of randomization. Nevertheless, the present study suggests that HBR is slightly more effective than IBR. Further larger RCTs are needed to examine the efficacy and evaluate the cost effectiveness of home rehabilitation programs.
Supplier
Acknowledgment
We are grateful to Paul Sears for his critical review of the English version of the manuscript.
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- a Version 12.0; SPSS Inc, 233 S Wacker Dr, 11th Fl, Chicago, IL 60606.
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated.Reprints are not available from the author.
PII: S0003-9993(06)00166-3
doi:10.1016/j.apmr.2006.02.018
© 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation. Published by Elsevier Inc. All rights reserved.
Volume 87, Issue 6 , Pages 826-831, June 2006
