Logistic regression calculating the odds of having outcome measure (DAS28, physician assessment (0–4), pain and HAQ, respectively) above median
| Panel A | DAS28 | Physician assessment | VAS-pain | HAQ | ||||
|---|---|---|---|---|---|---|---|---|
| Physical activity at leisure time | OR* | 95% CI | OR* | 95% CI | OR* | 95% CI | OR* | 95% CI |
| Inactive | 1.00 | Ref. | 1.00 | Ref. | 1.00 | Ref. | 1.00 | Ref. |
| Some physical activity | 0.84 | 0.30 to 1.59 | 0.92 | 0.49 to 1.74 | 0.90 | 0.48 to 1.68 | 1.04 | 0.55 to 1.98 |
| Some regular physical activity | 0.58 | 0.30 to 1.12 | 0.66 | 0.33 to 1.30 | 0.60 | 0.31 to 1.16 | 0.98 | 0.50 to 1.92 |
| Regular physical activity / work-out | 0.41 | 0.20 to 0.82 | 0.58 | 0.28 to 1.19 | 0.52 | 0.26 to 1.04 | 0.49 | 0.24 to 0.99 |
| p Value for trend | <0.01 | 0.02 | <0.01 | <0.01 | ||||
| Panel B | Physical activity at leisure time | Events (N) | OR* | 95% CI | OR† | 95% CI |
|---|---|---|---|---|---|---|
| DAS28 ≥5.24 | No regular physical activity | 189 | 1.00 | Ref. | 1.00 | Ref. |
| Regular physical activity | 122 | 0.58 | 0.42 to 0.81 | 0.57 | 0.39–0.82 | |
| Physician assessment >2 | No regular physical activity | 130 | 1.00 | Ref. | 1.00 | Ref. |
| Regular physical activity | 82 | 0.67 | 0.47 to 0.95 | 0.64 | 0.43 to 0.95 | |
| VAS-pain >56 | No regular physical activity | 181 | 1.00 | Ref. | 1.00 | Ref. |
| Regular physical activity | 127 | 0.62 | 0.45 to 0.86 | 0.67 | 0.46 to 0.97 | |
| HAQ ≥1 | No regular physical activity | 194 | 1.00 | Ref. | 1.00 | Ref. |
| Regular physical activity | 142 | 0.71 | 0.51 to 1.00 | 0.85 | 0.58 to 1.23 |
First, the effect of each category of physical activity is shown, and then the exposure is dichotomised; comparing the effect of regular physical activity with no regular physical activity.
*Adjusted for sex, age at diagnosis (<40, 40–50, 50–60, 60–65, 65–70 years of age) and period of diagnosis (2006–2008, 2009–2010).
†Additionally adjusted for smoking habits at diagnosis (never/past/current cigarette smokers), body mass index at diagnosis (<25, 25–30, >30 kg/m2), alcohol intake at diagnosis (five levels), socioeconomic status (assessed as highest attained level of education, three levels), vegetable intake the last year before diagnosis (in quartiles) and physically demanding work 5 years before diagnosis (four levels).
DAS28, disease activity score 28 joints; HAQ, health assessment questionnaire; VAS, visual-analogue scale.