Table 4

Correlation between PI HAQ scores and variables over three visits (study 4), n=93

PI HAQ at:
Variable0 Months6 Months12 MonthsMean correlation†
*p<0.05; **p<0.01; ***p<0.001; †Z transformation to calculate correlation over several visits; ‡reverse scored, low score indicates worse status.
Disability
    Disability 0.887*** 0.843*** 0.895*** 0.877***
    Perceived change 0.388*** 0.451*** 0.420***
    Dissatisfaction 0.427*** 0.560*** 0.714*** 0.579***
Disease activity
    Pain 0.354*** 0.460*** 0.594*** 0.475***
    Swollen joints 0.253** 0.206* 0.242** 0.234**
    Tender joints 0.295** 0.369*** 0.319*** 0.328***
    Early morning stiffness 0.399*** 0.365*** 0.316** 0.360***
Psychological status
    Anxiety 0.247* 0.371*** 0.337*** 0.319**
    Depression 0.335*** 0.426*** 0.507*** 0.425***
    Helplessness 0.404*** 0.565*** 0.527*** 0.502***
    Satisfaction with life‡−0.439**−0.286**−0.363***−0.360***
Social support
    Overall social support‡−0.215*−0.180−0.285**−0.230*
        Appraisal of support‡−0.217*−0.108−0.193−0.170
        Belonging‡−0.165 0.047−0.183−0.100
        Self esteem‡−0.253**−0.337***−0.331***−0.310**
        Tangible support‡−0.063−0.010−0.204*−0.090
Personality
    Optimism‡−0.157
    Neuroticism 0.199
Age 0.126
Disease duration 0.230*
Time trade off (n=67) 0.269*