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Adults with SCI: (Miller et al., 2011; n = 50; mean age = 43.7 (10.7) years, mean time since injury = 16.1 (10.1) years)

• SEM for Satisfaction score = 0.58
• MDC for Satisfaction x Importance score = 5.87 

Adults with SCI: (Miller et al., 2011)

• MDC for Satisfaction score = 1.6
• MDC for Satisfaction x Importance score = 16.3

Adults with SCI: (Miller et al, 2011; test-retest interval = 1 week)

• Adequate test-retest reliability (ICC = 0.83) for Satisfaction and (0.88) for Satisfaction x Importance scores respectively

Farsi-speaking SCI patients: (Alimohammad et al, 2016; n = 75, mean age = 31.9 (9.5) years, mean duration of injury = 59.8 (60.8) months, test-retest inverval = 14 days, Farsi translation of WhOM)

• Excellent test-retest reliability (ICC = 0.91) for Mean Satisfaction and (0.93) for Mean Satisfaction x Importance scores, respectively
• Adequate test-retest reliability (ICC = 0.83) for Mean Body function scores

Adults with SCI: (Miller et al, 2011)

• Excellent inter-rater reliability (ICC = 0.91) for Satisfaction and (0.90) for Satisfaction x Importance scores, respectively

Farsi-speaking SCI patients: (Alimohammad et al, 2016)

• Excellent inter-rater reliability for Mean Satisfaction, Satisfaction x Importance, and Body function scores (ICC = 0.99 for each)

Convergent validity:

Adults with SCI: (Miller et al, 2011)

• Excellent correlation between WhOM Mean Satisfaction score and LIFE-H Employment item ¡°Eating and moving around in your place of occupation¡± (r = 0.62)
• Poor to Adequate correlations between Whom Mean Satisfaction and Mean Satisfaction x Importance scores and other LIFE-H items (r = 0.16-0.56)

Farsi-speaking SCI patients: (Alimohammad et al, 2016)

• Adequate correlation of WhOM-Farsi with Spinal Cord Independence Measure-III (SCIM-III) (r = 0.31-0.51)
• Poor correlation of WhOM-Farsi with Physical Component Summary (PCS) (r = 0.14-0.30) and Mental Component Summary (MCS) (r = -0.04-0.24) scores of the Short Form Health Survey-12 (SF-12)

Long term care residents: (Parvaneh et al, 2014)

• MDC for Satisfaction score = 2.90
• MDC for Importance x Satisfaction score =  23.96

Adolescent Wheelchair Users: (Field et al., 2022; MDD = Minimal Detectable Difference)

Ages 5-17

• MDD for Mean Satisfaction score (n = 24) = 4.83 for inside participation
• MDD for Mean importance score (n = 24) is NS for inside participation
• MDD for Mean Importance x Satisfaction score (n = 24) = 46.51 for inside participation
• MDD for Mean Importance score (n = 24) = 1.99 for outside participation
• MDD for Mean Satisfaction score (n = 28) = 2.32 for outside participation
• MDD for Mean Importance x Satisfaction score (n = 28) = 20.15 for outside participation 

Ages 8-17

• MDD for Mean Importance score (n = 18) = 2.87 for inside participation
• MDD for Mean Satisfaction score (n = 18) = 3.45 for inside participation
• MDD for Mean Importance x Satisfaction score (n = 18) = 28.40 for inside participation
• MDD for Mean Importance score (n = 18) is NS for outside participation
• MDD for Mean Satisfaction score (n = 22) = 2.46 for outside participation
• MDD for Mean Importance x Satisfaction score (n = 22) = 17.69 for outside participation 

Parents 

• MDD for Mean Satisfaction score (n = 10) = 3.17 for inside participation
• MDD for Mean Importance score (n = 10) is NS for inside participation
• MDD for Mean Importance x Satisfaction score (n = 10) = 26.58 for inside participation
• MDD for Mean Importance score (n = 10) is NS for outside participation
• MDD for Mean Satisfaction score (n = 12) = 1.79 for outside participation
• MDD for Mean Importance x Satisfaction score (n = 12) = 17.17 for outside participation 

Long term care residents: (Parvaneh et al., 2014, mean test-retest interval = 13.8 days)

• Adequate test-retest reliability for Mean Importance x Satisfaction (ICC = 0.82)
• Poor test-retest reliability for Mean Satisfaction (ICC = 0.67)

Power mobility users aged 50+: (Auger et al., 2010; n = 40, female = 23 (57.5%), mean time using powered mobility device = 7.7 (3.1) months, test-retest interval = two weeks, French translation of WhOM)

• Excellent test-retest reliability for Total Importance x Satisfaction (ICC = 0.92), Total Satisfaction (ICC = 0.91), and Skin Condition scores (ICC = 1.00)
• Adequate test-retest reliability for Mean Importance x Satisfaction (ICC = 0.89), Mean Satisfaction (ICC = 0.79), Comfort (ICC = 0.85), and Position (ICC = 0.77)

Adolescent Wheelchair Users: (Field et al., 2022)

Ages 5-17: ICC [95% CI]

• Excellent test retest reliability (ICC = 0.93 [0.85, 0.97]) for Mean Satisfaction and (0.94 [0.88, 0.97]) for Importance x Satisfaction within Outside Participation
• Adequate test retest reliability (ICC = 0.57 [0.24, 0.79]) for Mean Satisfaction within Inside Participation subgroup and (0.63 [0.33, 0.82] and 0.48 [0.14, 0.72]) for Importance x Satisfaction within Inside Participation and Mean Importance within Outside Participation, respectively
• Poor test retest reliability (ICC = 0.33 [-0.07, 0.64]) for Mean Importance within Inside Participation 

Ages 8-17: ICC [95% CI]

• Excellent test retest reliability (ICC = 0.91 [0.79, 0.96]) for Mean Satisfaction and (0.92 [0.81, 0.97]) for Importance x Satisfaction within Outside Participation
• Adequate test retest reliability (ICC = 0.61 [0.21, 0.84]) for Mean Importance within inside participation subgroup and (0.80 [0.55, 0.92], 0.85 [0.65, 0.94], and 0.56 [0.19, 0.78]) for Mean Satisfaction and Importance x Satisfaction within inside participation and Mean Importance for outside participation, respectively

Parents: ICC [95% CI]

• Excellent test retest reliability (ICC = 0.95 [0.84, 0.99]) for Mean satisfaction and (0.95 [0.85, 0.99]) for Importance x Satisfaction within outside participation subgroups
• Adequate test retest reliability (ICC = 0.85 [0.48, 0.96]) for Mean Satisfaction and (0.89 [0.61, 0.97]) for Importance x Satisfaction within inside participation subgroup
• Poor test retest reliability (ICC = 0.37 [-0.28, 0.79]) for Mean Importance for inside participation subgroup and (0.12 [-0.28, 0.58]) for Mean Importance within outside participation subgroup

Convergent validity:

Long term care residents: (Parvaneh et al., 2014)

• Adequate correlations between the Mean Importance x Satisfaction measure for the WhOM Total (n = 55) and Self-respondent (n = 38) groups and the Late Life Function and Disability Instrument (LLDI) of r = 0.42 and 0.50, respectively (p ¡Ü 0.05).

Power mobility users aged 50+: (Auger et al., 2010; n = 74)

• Adequate correlation of WhOM Part I: Participation Mean Importance x Satisfaction and Mean Satisfaction with Quebec User Evaluation of Satisfaction with Technology questionnaire (QUEST 2.0) (r = 0.36-0.46)
• Poor correlation of WhOM Part I: Participation Total Importance x Satisfaction and Total Satisfaction with QUEST 2.0 (r = 0.01-0.24)
• Adequate correlation of WhOM Part I: Participation Mean Importance x Satisfaction, Mean Satisfaction, and Total Importance x Satisfaction with Psychosocial Impact of Assistive Devices Scale (PIADS) (r = 0.31-0.43)
• Poor correlation of WhOM Part I: Participation Total Satisfaction with (PIADS) (r = 0.21)

Adolescent Wheelchair Users: (Field et al., 2022)

• Excellent correlation between WhOM-YP child vs parent mean weighted satisfaction scores for inside participation (r = 0.75, p < 0.01, n = 12) and outside participation (r = 0.79, p < 0.001, n = 14)

   

Discriminant validity:

Power mobility users aged 50+: (Auger et al., 2010; n = 74)

• Significant differences among all WhOM scores based on duration of use between wait-list and initial users and wait-list and long-term users (p < 0.001 for both), with higher scores associated with longer use.
• Significantly higher total WhOM scores for Powered Wheelchair Users vs. Scooter Users for Total Importance x Satisfaction (p < .05) and Total Satisfaction (p < .01)
• Significantly higher WhOM scores for Powered Wheelchair Users vs. Scooter Users at Home for both total (Total Importance x Satisfaction and Total Satisfaction) and mean (Mean Importance x Satisfaction and Mean Satisfaction) scores (p < .001)

Adolescent Wheelchair Users: (Field et al., 2022)

• Significant difference between mean satisfaction outside participation scores noted (p < 0.0001) for experienced (median: 74.2, n = 22) vs inexperienced (median: 32.9, n = 10) power wheelchair users