Relation between symptom reporting and physical and psychosocial environment: mutually adjusted models
| Model 1: Adjusted for sex, age, and grade and all work characteristics listed in table | Model 2: Adjusted for sex, age, and grade and all physical characteristics listed in table | Model 3: Physical and work characteristics included together | Model 4: Model 3 + GHQ | |
|---|---|---|---|---|
| Values are difference in mean symptom score from reference group for 2523 participants with complete data. | ||||
| *p<0.05; **p<0.01. | ||||
| Work characteristics | ||||
| Job demands tertile | ||||
| Middle | 0.13 (0.12) | 0.12 (0.12) | 0.04 (0.12) | |
| High | 0.45 (0.13)** | 0.44 (0.13)** | 0.26 (0.13)* | |
| Decision latitude tertile | ||||
| Low | 0.11 (0.12) | 0.10 (0.12) | 0.07 (0.10) | |
| Middle | 0.12 (0.12) | 0.12 (0.10) | 0.04 (0.12) | |
| Support tertile | ||||
| Low | 0.43 (0.11)** | 0.43 (0.11)** | 0.31 (0.10)** | |
| Middle | 0.19 (0.10) | 0.19 (0.10) | 0.15 (0.10) | |
| Physical characteristics | ||||
| Dry bulb temperature 19–24°C v (<19°C or >24°C) | 0.15 (0.17) | 0.11 (0.17) | 0.12 (0.15) | |
| Relative humidity <35% or >65% (v 35–65%) | 0.07 (0.16) | 0.03 (0.16) | −0.01 (0.14) | |
| Airborne bacteria >1000 cfu/m3 (v ⩽1000 cfu/m3) | 0.10 (0.16) | 0.08 (0.15) | 0.11 (0.14) | |
| Inhalable dust >0.1 mg/m3 (⩽0.1 mg/m3) | −0.03 (0.18) | −0.03 (0.18) | −0.02 (0.16) | |
| Control over workstation: no control (v some control) | 0.55 (0.23)* | 0.50 (0.23)* | 0.47 (0.22)* | |