Table 8.
Associations between baseline workplace sitting in 2012 and lower back complaints in the last 12 months in 2017 (yes/no) stratified by leisure time physical activity to baseline among 2,082 employees aged 31–60 years in Germany. Poisson regressions. Prevalence Rations (PR)
| Exposure | Strata defined by leisure time physical activity prior to baseline | |||||
|---|---|---|---|---|---|---|
| Lower back, n = 1177 | ||||||
| Occupational sitting 2012 | none of the time | little/some of the time | mostly/all the time | |||
| PR | 95% CI | PR | 95% CI | PR | 95% CI | |
| Model 3 | ||||||
| Under 5 h/week | 1 | (Ref) | 1 | (Ref) | 1 | (Ref) |
| 5 to < 15 h/week | 1.15 | 0.98–1.36 | 1.00 | 0.86–1.17 | 0.71 | 0.50–1.01 |
| 15 to < 25 h/week | 1.22 | 1.01–1.47 | 1.13 | 0.96–1.33 | 0.80 | 0.57–1.12 |
| 25 to < 35 h/week | 1.32 | 1.07–1.63 | 1.03 | 0.85–1.24 | 0.88 | 0.54–1.41 |
| 35 or more hours/week | 1.08 | 0.87–1.43 | 1.03 | 0.85–1.25 | 0.66 | 0.34–1.29 |
Model 3: adjusted for sex, age, occupational level, BMI, smoking, musculoskeletal diseases at baseline, psychological disorders and lifting/carrying heavy loads at work
PR: prevalence ratio, Ref.: reference category