Table 2.
The association between sitting time and mental health stratified by work status: results of the linear regression analysis.
| Association with mental health1 | ||||||
|---|---|---|---|---|---|---|
| Crude | Adjusted2 | Adjusted3 | ||||
| Beta | 95% CI | Beta | 95% CI | Beta | 95% CI | |
| Working (n = 513) | ||||||
| Total | −0.04 | −0.10; 0.02 | −0.05 | −0.12; 0.01 | −0.05 | −0.12; 0.01 |
| Transport (h/wk) | −0.10 | −0.26; 0.06 | −0.13 | −0.29; 0.04 | −0.13 | −0.29; 0.04 |
| (i) Commuting or during work (h/wk) | −0.10 | −0.27; 0.07 | −0.16 | −0.34; 0,02 | −0.155 | −0.33; 0.03 |
| (ii) Leisure (h/wk) | −0.29 | −0.95; 0.37 | 0.04 | −0.61; 0.68 | 0.05 | −0.60; 0.70 |
| At work (h/wk) | 0.04 | −0.05; 0.13 | 0.01 | −0.09; 0.11 | 0.01 | −0.09; 0.11 |
| Leisure (h/wk) | −0.13 | −0.24; −0.03 | −0.11 | −0.21; −0.01 | −0.11 | −0.21; −0.002 |
| (i) Reading (h/wk) | 0.07 | −0.21; 0.35 | 0.15 | −0.14; 0.44 | 0.15 | −0.13; 0.44 |
| (ii) TV viewing (h/wk) | −0.20 | −0.38; −0.03 | −0.19 | −0.35; −0.02 | −0.18 | −0.35; −0.01 |
| (iii) Using computer (h/wk) | −0.21 | −0.48; 0.05 | −0.23 | −0.49; 0.02 | −0.23 | −0.49; 0.03 |
| (iv) Other sitting (h/wk) | −0.28 | −0.57; 0.01 | −0.16 | −0.44; 0.12 | −0.16 | −0.44; 0.12 |
| Nonworking (n = 551) | ||||||
| Total | 0.04 | −0.04; 0.11 | 0.003 | −0.07; 0.08 | 0.0044 | −0.07; 0.08 |
| Transport (h/wk) | 0.05 | −0.31; 0.42 | −0.14 | −0.50; 0.22 | −0.13 | −0.49; 0.23 |
| (i) Commuting or during work (h/wk) | — | — | — | |||
| (ii) Leisure (h/wk) | 0.05 | −0.31; 0.42 | −0.14 | −0.50; 0.22 | −0.13 | −0.49; 0.23 |
| At work (h/wk) | — | — | — | |||
| Leisure (h/wk) | 0.03 | −0.05; 0.12 | 0.01 | −0.07; 0.09 | 0.014 | −0.07; 0.09 |
| (i) Reading (h/wk) | 0.16 | −0.02; 0.34 | 0.01 | −0.18; 0.19 | −0.014 | −0.19; 0.18 |
| (ii) TV viewing (h/wk) | −0.09 | −0.22; 0.05 | −0.04 | −0.17; 0.09 | −0.04 | −0.17; 0.09 |
| (iii) Using computer (h/wk) | 0.32 | 0.10; 0.54 | 0.16 | −0.07; 0.39 | 0.17 | −0.06; 0.40 |
| (iv) Other sitting (h/wk) | −0.05 | −0.23; 0.14 | 0.03 | −0.16; 0.21 | 0.03 | −0.15; 0.22 |
1A higher MHI score indicates better mental health; thus, a negative beta indicates a negative association between sitting time and mental health; 2Adjusted for gender, age, education, household composition, perceived health, physical activity, smoking, and alcohol consumption; 3additionally adjusted for BMI; 4when added to this model: P ≤ 0.05 for a positive interaction term; 5when added to this model: P ≤ 0.05 for a negative interaction term.