Influence of demographic variables on self-reported and performance-based disability
| Variables, n=200 | RMDQ | BPS | ||
| t (p value) | B (p value) | t (p value) | B (p value) | |
| Gender (female) | 3.0 (0.003) | 2.7 (0.003) | 3.8 (<0.0001) | 1.9 (<0.0001) |
| r (p value) | B (p value) | r (p value) | B (p value) | |
| Age (years) | 0.3 (<0.0001) | 0.1 (<0.0001) | 0.3 (<0.0001) | 0.1 (<0.0001) |
| Education (years) | −0.3 (<0.0001) | −0.3 (<0.0001) | −0.2 (0.001) | −0.1 (0.001) |
| F (p value) | B (p value) | F (p value) | B (p value) | |
| Marital status | 2.7 (0.031) df=4, 195 | Never married: 4.5 (0.333) Currently married: 6.8 (0.130) Separated: 7.0 (0.267) Widowed: 10.8 (0.019) Cohabiting: reference | 4.4 (0.002) df=4, 195 | Never married: 1.1 (0.665) Currently married: 1.8 (0.479) Separated: 3.5 (0.325) Widowed: 4.5 (0.086) Cohabiting: reference |
| Work status | 4.0 (<0.0001) df=7, 192 | Paid work: −2.8 (0.457) Self-employed: 1.2 (0.731) Non-paid work: 1.3 (0.740) Student: −2.0 (0.632) Homemaker: 4.1 (0.307) Retired: −10.3 (0.149) Unemployed for health reasons: 9.7 (0.042) Unemployed for other reasons: reference | 2.5 (0.018) df=7, 192 | Paid work: −1.4 (0.519) Self-employed: 0.5 (0.812) Non-paid work: 0.1 (0.963) Student: −1.0 (0.672) Homemaker: 3.2 (0.163) Retired: −0.3 (0.936) Unemployed for health reasons: 1.4 (0.605) Unemployed for other reasons: reference |
Sex, marital status and occupation are categorical variables.
BPS, Back Performance Scale; B, correlation coefficient; F, analysis of variance; RMDQ, Roland Morris Disability Questionnaire; r, correlation; rs/ r, Spearman’s/Pearson’s correlation; t, test.