Pearson correlations between WALS/WLQ-25 and the global measures of at-work productivity loss from our MID/PAS study.
| Scale | Mean Score, n (SD) | WLQ-25 PDmod | WALS | WPS | WPAI | WAI* | |
|---|---|---|---|---|---|---|---|
| WLQ-25 | 9.41 (7.10) | 1.00, 175 | 0.79, 173 | 0.75, 148 | 0.80, 146 | −0.74, 145 | −0.49**, 51 |
| WALS | 13.16 (7.32) | 1.00, 184 | 0.73, 152 | 0.81, 149 | −0.77, 148 | 0.54, 50 | |
| WPS | 3.90 (3.12) | 1.00, 154 | 0.88, 150 | −0.78, 149 | −0.54, 51 | ||
| WPAI | 3.66 (2.85) | 1.00, 151 | −0.79, 146 | −0.56, 50 | |||
| 64.07 (32.04) | 1.00 | 0.56, 51 | |||||
| WAI | 6.48 (2.00) | 1.00, 52 |
↵* It should be noted that the WAI was introduced to the survey later than the other measures, and therefore was not completed by all participants (n = 52 vs n = 184). This lesser sample might have affected the correlation.
↵** p = 0.0003; p ≤ 0.0001 for all other correlations. WALS: Workplace Activity Limitations Scale; WLQ-25 PDmod: Work Limitations Questionnaire with modified physical demands scale; WPS: Arthritis-specific Work Productivity Survey; WPAI: Work Productivity and Activity Impairment Questionnaire; QQ: Quantity and Quality Method; WAI: Work Ability Index.