Table 4.

Univariate correlation of lost-hour estimates with function, pain, and arthritis severity. Values in parentheses are SE.

InterceptHAQ CoefficientInterceptPain CoefficientInterceptArthritis Severity Coefficient
Simple logistic regression*
  HLQ−2.06 (0.34)1.13 (0.29)**−2.11 (0.34)0.03 (0.01)**−2.55 (0.44)0.45 (0.11)**
  WLQ1.26 (0.40)4.88 (1.80)**1.16 (0.48)0.10 (0.04)**0.86 (0.65)0.99 (0.39)**
  HPQ1.04 (0.28)0.83 (0.34)**0.53 (0.29)0.04 (0.01)**−0.05 (0.37)0.67 (0.15)**
  WPAI−0.05 (0.25)1.43 (0.31)**−0.54 (0.27)0.06 (0.01)**−0.81 (0.33)0.66 (0.12)**
Spearman correlations
  HLQ0.410.250.23
  WLQ0.150.200.20
  HPQ0.410.250.23
  WPAI0.150.200.20
  • * Lost hours due to presenteeism > 0 vs 0.

  • ** P < 0.05 for simple logistic regression coefficient.

  • Correlation was measured only among the patients whose lost hours due to presenteeism were > 0. HLQ: Health and Labour Questionnaire; WLQ: Work Limitations Questionnaire; HPQ: WHO Health and Work Performance Questionnaire; WPAI: Work Productivity and Activity Impairment Questionnaire; HAQ: Health Assessment Questionnaire.