Table 4.
Multiple regression analyses with fatigue a as a dependent variable.
| Men | Women | |||
|---|---|---|---|---|
| β b | p | β b | p | |
| Age (years) | −0.06 | 0.36 | 0.03 | 0.59 |
| BMI (kg/m2) | −0.03 | 0.64 | −0.03 | 0.62 |
| Cigarette smoking | ||||
| Nonsmoker or ex-smoker c (reference) | ||||
| Moderate smoker d | 0.06 | 0.37 | −0.05 | 0.36 |
| Heavy smoker e | −0.07 | 0.27 | 0.03 | 0.57 |
| Alcohol consumption | ||||
| None (reference) | ||||
| Once per week or less, but not none | −0.10 | 0.16 | −0.08 | 0.21 |
| More than once per week | −0.08 | 0.24 | 0.01 | 0.85 |
| Exercise | ||||
| Less than once per week (reference) | ||||
| Once per week or more | −0.06 | 0.27 | −0.10 | 0.08 |
| Total vegetable intake (g/day) | −0.05 | 0.44 | −0.16 | 0.006 |
| Job strain index f | 0.35 | < 0.001 | 0.33 | < 0.001 |
| Plasma NOx (μmol/L) | 0.02 | 0.77 | −0.14 | 0.02 |
| Adjusted R2 | 0.149 ( p < 0.001) | 0.161 ( p < 0.001) | ||
a Evaluated using the Profile of Mood States; b Standardized regression coefficient; c Others than moderate or heavy smokers; d Current smokers with a smoking history of 1 to 20 pack years; e Current smokers with a smoking history of >20 pack years; f Calculated as job demands divided by job control evaluated using the Job Content Questionnaire and logarithmically transformed.