Assessing Subjective Fall Concerns in Residential Living Seniors: Development of the Activities-Specific Fall Caution Scale  Nancy J. Pearce, RN, MSc, Anita M. Myers, PhD, Robin A. Blanchard, MSc  Archives of Physical Medicine and Rehabilitation  Volume 88, Issue 6, Pages 724-731 (June 2007) DOI: 10.1016/j.apmr.2007.03.002 Copyright © 2007 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 1 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. Archives of Physical Medicine and Rehabilitation 2007 88, 724-731DOI: (10.1016/j.apmr.2007.03.002) Copyright © 2007 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 2 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). Archives of Physical Medicine and Rehabilitation 2007 88, 724-731DOI: (10.1016/j.apmr.2007.03.002) Copyright © 2007 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions