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Table 5 Risk of Crohn’s disease and ulcerative colitis according to quartiles of physical activity

From: Associations between participation in, intensity of, and time spent on leisure time physical activity and risk of inflammatory bowel disease among older adults (PA-IBD): a prospective cohort study

Quartile groups of physical activity

Crude

Adjusteda

HRb

95% CI

HRb

95% CI

Crohn’s disease

MET hours/week

 2nd quartile

0.65

(0.38; 1.13)

0.67

(0.39; 1.17)

 3rd quartile

0.93

(0.56; 1.52)

0.93

(0.56; 1.54)

 4th quartile

0.74

(0.43: 1.26)

0.69

(0.40; 1.20)

Ulcerative colitis

MET hours/week

 2nd quartile

1.02

(0.79; 1.32)

1.02

(0.80; 1.34)

 3rd quartile

0.77

(0.59; 1.02)

0.78

(0.59; 1.02)

 4th quartile

0.89

(0.68: 1.16)

0.86

(0.66: 1.13)

  1. aAdjusted for age, gender, occupational physical activity, smoking, comorbidity
  2. b1st quartile is the reference
  3. Abbreviations: MET metabolic equivalent of task, HR hazard ratio, CI confidence interval