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Table 2 Age-adjusted and multivariable-adjusted relative risk a of rheumatoid arthritis by leisure-time activity in the Swedish Mammography Cohort, follow-up 2003 to 2010

From: Physical activity and risk of rheumatoid arthritis in women: a population-based prospective study

Exercise

Walking/bicycling

 

Cases/cohort

<20 minutes/day

Cases/cohort

≥20 minutes/day

(median 40 to 60)

Age-adjusted

   

<1 hour/week

32/3,400

1.00 (reference)

14/2,370

0.57

(0.31 to 1.07)

≥1 hour/week

37/5,369

0.70

118/18,973

0.62b

(median 2 to 3)

(0.44 to 1.12)

(0.42 to 0.92)

Multivariable-adjusted a

   

<1 hour/week

32/3,400

1.00 (Ref)

14/2,370

0.59

(0.31 to 1.10)

≥1 hour/week

37/5,369

0.72

118/18,973

0.65b

(median 2 to 3)

(0.45 to 1.16)

(0.43 to 0.96)

  1. Data in parentheses are the 95% confidence interval. aAdjusted for age (continuous), smoking status (categorised as never, former, current ≤10 cigarettes per day or >10 cigarettes per day), alcohol intake (never, former, current <2 drinks per week, ≥2 drinks per week), body mass index (quartiles) and educational level (<10 years, 10–12 years, >12 years, other). bCorresponding to a median of 40 to 60 minutes per day of walking/bicycling and 2 to 3 hours per week of exercise.
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Arthritis Research & Therapy

ISSN: 1478-6362

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