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. Author manuscript; available in PMC: 2020 Dec 18.
Published in final edited form as: Scand J Work Environ Health. 2018 Nov 19;45(3):267–279. doi: 10.5271/sjweh.3787

Table 2.

Occupational physical activity and incident stroke (N=441). Hazard ratios (HR) and 95% confidence intervals (CI) from Cox regression analyses with incremental adjustment for potential confounders. Sister Study, 2004–2015, N=31 270.

Occupational physical activity N Case/Exposed Model 1a Model 2 b Model 3 c Model 4 d

HR 95% CI HR 95% CI HR 95% CI HR 95% CI
Current job
 Mostly sitting 221/16287 1.00 1.00 1.00 1.00
 Sitting and standing equally 103/6386 1.15 0.91–1.45 1.18 0.93–1.49 1.19 0.94–1.51 1.18 0.93–1.49
 Mostly standing 67/4656 1.03 0.78–1.35 1.04 0.79–1.36 1.06 0.80–1.39 1.05 0.80–1.39
 High intensity work 40/2477 1.24 0.88–1.73 1.12 0.80–1.56 1.11 0.79–1.56 1.11 0.79–1.56
  Continuous walking/movements 35/2225 1.20 0.84–1.72 1.10 0.77–1.57 1.10 0.77–1.57 1.10 0.77–1.57
  Heavy manual labor 5/252 1.52 0.63–3.68 1.27 0.52–3.08 1.24 0.51–3.02 1.21 0.50–2.95
Longest held job
 Mostly sitting 194/14444 1.00 1.00 1.00 1.00
 Sitting and standing equally 94/6586 1.01 0.79–1.29 1.03 0.80–1.32 1.03 0.80–1.32 1.02 0.80–1.31
 Mostly standing 80/5549 1.05 0.81–1.36 1.03 0.79–1.34 1.04 0.80–1.35 1.04 0.80–1.35
 High intensity work 63/3227 1.56 1.17–2.07 1.46 1.09–1.94 1.45 1.08–1.94 1.44 1.08–1.93
  Continuous walking/movements 58/2821 1.62 1.21–2.18 1.54 1.15–2.07 1.53 1.14–2.07 1.53 1.13–2.06
  Heavy manual labor 5/406 1.04 0.43–2.53 0.88 0.36–2.15 0.89 0.36–2.16 0.87 0.36–2.13
a

Model 1 adjusts for age.

b

Model 2 adjusts for age, leisure-time physical activity, alcohol, smoking, and body mass index.

c

Model 3 adjusts for age, leisure-time physical activity, alcohol, smoking, body mass index, discrimination at work, and night work.

d

Model 4 adjusts for age, leisure-time physical activity, alcohol, smoking, body mass index, discrimination at work, night work, and rate pressure product.