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U.S. Social Security Administration Claimants: (Ni et al., 2014; n = 1017; mean age = 49.65 (9.85) years)

• Mean score on Whole Body Mobility Scale = 48.51 (SD = 10.87)
• Mean score on Changing and Maintaining Body Position Scale =  50.07 (SD = 10.38)
• Mean score on Upper Body Function Scale = 50.06 (SD = 10.22)
• Mean score on Upper Extremity Fine Motor Scale=  49.89 (SD = 9.67)
• Mean score on Wheelchair Mobility Scale (n = 115) = 50.05 (SD = 11.11)

Adults with Physical Disability: (Meterko et al., 2015; n = 497; mean age = 56.02 (8.52) years; work disability duration = 3.83 (2.43) years; 52.31% male)

• Mean score on Whole Body Mobility Scale (n = 471) = 33.56 (6.91)
• Mean score on Changing and Maintaining Body Position Scale (n = 493) = 34.99 (7.49)
• Mean score on Upper Body Function Scale (n = 491) 34.69 (7.69)
• Mean score on Upper Extremity Fine Motor Scale (n = 494) = 43.42 (7.66)

Adults with Mental Disability: (Meterko et al., 2015; n = 476; mean age = 51.2 (9.81) years; work disability duration = 7.43 (5.21) years; 33.61% male)

• Mean score on Self-Efficacy Scale (n = 476)  = 34.75 (13.74)
• Mean score on Mood & Emotion Scale (n = 474) = 35.15 (9.63)
• Mean score on Behavioral Control Scale (n = 468) = 42.89 (10.48)
• Mean score on Social Interactions Scale (n = 473) = 36.76 (8.94)

Adults with Physical Disability or Injury: (McDonough et al., 2018; n = 50; mean age = 48.3 (13.9) years; subjects had 1 or more musculoskeletal conditions: shoulder (n = 21), knee (n = 16), lower back (n = 13), ankle/ foot (n = 10), neck (n = 8), hip (n = 7); 66% overweight or obese)

• Mean score on Whole Body Mobility Scale =  51.1 (SD = 7.3)
• Mean score on Changing and Maintaining Body Position Scale =  49.6 (SD = 7.1)
• Mean score on Upper Body Function Scale = 49.1 (SD = 7.3)
• Mean score on Upper Extremity Fine Motor Scale = 53.97 (SD = 5.0)

U.S. Social Security Administration Claimants and General Population Sample: (Marfeo et al., 2018; Claimant sample: n = 1695; mean age = 44.73 (11.64) years; General sample: n = 2025; mean age = 42.19 (12.76) years; expanded mental health component of WD-FAB)

• Mean score on Cognition & Communication subdomain
  • 5-10 item computer adaptive test (CAT) (n = 1692) = 38.8 (6.78)
  • Full item bank (n = 1692) = 38. (7.04)
  • Full item bank ¨C general sample (n = 2005) = 50.0 (10.2)
• Mean score on Self-Regulation subdomain 
  • 5-10 item computer adaptive test (CAT) (n = 1413) = 42.7 (9.57)
  • Full item bank (n = 1413) = 42.7 (10.6)
  • Full item bank ¨C general sample (n = 2020) = 49.5 (11.94)
• Mean score on Resilience & Sociability subdomain
  • 5-10 item computer adaptive test (CAT) (n = 1409) = 43.4 (10.21)
  • Full item bank (n = 1409) = 43.3 (10.44)
  • Full item bank ¨C general sample (n = 1989) = 49.5 (12.14)
• Mean score on Mood & Emotion subdomain
  • 5-10 item computer adaptive test (CAT) (n = 1015) = 35.0 (11.91)
  • Full item bank (n = 1015) = 34.9 (12.33)
  • Full item bank ¨C general sample (n = 1000) = 49.9 (10.25)

Convergent validity:

Adults with Physical Disability or Injury: (McDonough et al., 2018)

• Adequate correlation between patient-report and provider-report on Whole Body Mobility (r = 0.49)
• Excellent correlation between patient-report and provider-report on Changing and Maintaining Body Position (r = 0.65)
• Excellent correlation between patient-report and provider-report on Upper Body Function (r = 0.63)

Adults with Physical Disability: (Meterko et al., 2015)

• Adequate and Excellent correlations between the Changing and Maintaining Body Position Scale with the Physical Component Score (PCS) of the Veterans RAND 36 Item Health Survey (VR-36) (r = 0.42) and the PROMIS Physical Function 10-Item Short Form (PPF10) (r = 0.65)
• Adequate and Excellent correlations between the Upper Body Function scale with VR-36 PCS (r  = 0.43) and PPF10 (r = 0.69) 
• Poor and Adequate correlations between the Upper Extremity Fine Motor scale with VR-36 PCS (r = 0.23) and PPF10 (r = 0.54) 
• Adequate and Excellent correlations between the Whole Body Mobility scale with VR-36 PCS (r = 0.55) and PPF10 (r = 0.70)

Adults with Mental Disability: (Meterko et al., 2015)

• Poor to Adequate convergent validity between the Self-Efficacy scale and the scales of the 24-Item Behavior and Symptom Identification Scale (BASIS-24) (r = -0.30 to -0.46)
• Adequate to Excellent convergent validity between the Mood and Emotions scale and BASIS-24 scales (r = -0.39 to -0.74)
• Poor to Adequate convergent validity between the Behavioral Control scale and BASIS-24 scales (r = -0.28 to -0.59)
• Poor to Excellent convergent validity between the Social Interactions scale and BASIS-24 scales (r = -0.24 to -0.63)
• Adequate to Excellent convergent validity between the Self-Efficacy (r = 0.46), Mood and Emotion (r = 0.67), Behavioral Control (r = 0.32), and Social Interaction (r = 0.56) scales and the Mental Component Score (MCS) of the VR-36

Discriminant validity:

Adults with Physical Disability: (Meterko et al., 2015)

• Excellent discriminant validity between WD-FAB Physical Function scales and Mental Component Scores of the VR-36
  • Changing and Maintaining Body Position scale (r = 0.12)
  • Upper Body Function scale (r = 0.21)
  • Upper Extremity Fine Motor scale (r = 0.24)
  • Whole Body Mobility scale (r = 0.15)

Adults with Mental Disability: (Meterko et al., 2015)

• Excellent discriminant validity between WD-FAB Behavioral Health scales and Physical Component Scores (PCS) of the VR-36
  • Self-Efficacy scale (r = 0.06)
  • Mood and Emotions scale (r = 0.21)
  • Behavioral Control scale (r = 0.07)
• Adequate discriminant validity between the Social Interactions scale and the PCS of the VR-36 (r = 0.31)

Adults with Physical Disability: (Meterko et al., 2015)

• Adequate floor effect of less than or equal to 2% across all Physical Functioning scales 
• Adequate ceiling effect for all Physical Functioning scales: less than 1% except for the Upper Extremity Fine Motor scale (12.4%)

Adults with Mental Disability: (Meterko et al., 2015)

• Adequate floor effect of less than or equal to 2.5% and ceiling effect of less than 2% across all Behavioral Health scales

U.S. Social Security Administration Claimants and General Population Sample: (Marfeo et al., 2018)

• Excellent: No floor effects for claimant sample for Cognition & communication, Self-regulation, and Resilience & sociability subdomains on 5-10 item CAT and full item bank; no floor effects for general sample for Mood & emotions subdomain for full item bank
• Adequate floor effects of less than 1% found for the general sample on full item bank for Cognition & communication, Self-regulation, and Resilience & sociability subdomains; similar floor effects found for the claimant sample on the 5-10 item CAT and full item bank for the Mood & emotions subdomain.
• Excellent: No ceiling effects for the claimant sample on 5-10 item CAT and full item bank for the Mood & emotions subdomain and the full item bank for the Self-regulation subdomain
• Adequate ceiling effects of less than 1% found for the claimant sample on the 5-10 item CAT and full item bank for the Cognition & communication and Resilience & sociability domains, the 5-10 item CAT for the Self-regulation domain, and the full item bank for the general sample on the Mood & emotions subdomain.
• Adequate ceiling effects for the general sample on the full item bank for the Cognition & communications (7.88%), Self-regulation (4.7%), and Resilience & sociability (12.97%) subdomains