Assessing Subjective Fall Concerns in Residential Living Seniors: Development of the Activities-Specific Fall Caution Scale

Probability curve for 4-category collapsed scale. Graphic representation of the probability of response for each of the 4 categories (1, go; 2, little, some, moderate; 3, very, extremely; 4, stop/avoid). The y axis represents the probability of responding to one of these categories (0−1.0) and the x axis represents the person measure minus the item measure in logits.

Person and item map for iteration 3. Person ability is shown on the left and item difficulty on the right (measured in logits or equal intervals). Abbreviations: M, mean; S, 1 standard deviation; T, 2 standard deviations. Legend: X is 1 respondent (located as having a 50% probability of endorsing the item).