Distributions of the subjects in the different categories of neck pain* in 1999 according to explanatory variables; odds ratios for explanatory variables
| Neck pain* (n=62) | Healthy (n=118) | Crude OR | ||||
|---|---|---|---|---|---|---|
| n | % | n | % | OR | 95% CI | |
| *Local or radiating neck pain, or both. | ||||||
| Work related variables | ||||||
| VDU working time | ||||||
| <50% | 41 | 34 | 81 | 66 | 1.0 | |
| ⩾50% | 18 | 35 | 34 | 65 | 1.0 | 0.6 to 2.9 |
| Physical work environment | ||||||
| Mean score >3 | 36 | 29 | 87 | 71 | 1.0 | |
| Mean score ⩽3 | 24 | 45 | 29 | 55 | 2.0 | 1.0 to 3.9 |
| Ergonomics of workstation | ||||||
| Mean score >3 | 42 | 33 | 85 | 67 | 1.0 | |
| Mean score ⩽3 | 18 | 37 | 31 | 63 | 1.2 | 0.6 to 2.3 |
| Height of the screen | ||||||
| Good (⩾10 cm) | 31 | 30 | 71 | 70 | 1.0 | |
| Poor (<10 cm) | 19 | 40 | 29 | 60 | 1.5 | 0.7 to 3.1 |
| Distance of the screen | ||||||
| Good (50–70 cm) | 35 | 33 | 71 | 67 | 1.0 | |
| Poor (<50 cm or >70 cm) | 17 | 35 | 31 | 65 | 1.1 | 0.5 to 2.3 |
| Distance of the keyboard | ||||||
| Good (⩾15 cm) | 18 | 26 | 52 | 74 | 1.0 | |
| Poor (<15 cm) | 29 | 40 | 44 | 60 | 1.9 | 0.9 to 3.9 |
| Deviance of the keyboard | ||||||
| Good (0±2 cm) | 21 | 29 | 52 | 71 | 1.0 | |
| Poor (> ±2 cm) | 26 | 37 | 44 | 63 | 1.5 | 0.7 to 3.0 |
| Distance of the mouse | ||||||
| Good (⩾15 cm) | 15 | 33 | 31 | 67 | 1.0 | |
| Poor (<15 cm) | 15 | 33 | 30 | 67 | 1.0 | 0.4 to 2.5 |
| Deviance of the mouse | ||||||
| Good (0±30 cm) | 12 | 32 | 26 | 68 | 1.0 | |
| Poor (> ±30 cm) | 18 | 34 | 35 | 66 | 1.1 | 0.5 to 2.7 |
| Breaks during work | ||||||
| Fully enough | 21 | 32 | 45 | 68 | 1.0 | |
| Rather enough/rather little/much too little | 14 | 36 | 25 | 64 | 1.2 | 0.5 to 2.8 |
| Influence on work load | ||||||
| Somewhat/rather/very much | 26 | 28 | 67 | 72 | 1.0 | |
| Very little/rather little | 34 | 40 | 51 | 60 | 1.7 | 0.9 to 3.2 |
| Individual variables | ||||||
| Sex | ||||||
| Male | 26 | 26 | 74 | 74 | 1.0 | |
| Female | 36 | 45 | 44 | 55 | 2.3 | 1.2 to 4.4 |
| Age | ||||||
| 25–43 | 22 | 38 | 36 | 62 | 1.0 | |
| 44–51 | 17 | 29 | 42 | 71 | 0.7 | 0.3 to 1.5 |
| 52–61 | 23 | 37 | 39 | 63 | 1.0 | 0.5 to 2.1 |
| Smoking | ||||||
| Never smoker | 31 | 32 | 66 | 68 | 1.0 | |
| Current/ex-smoker | 29 | 37 | 49 | 63 | 1.3 | 0.7 to 2.4 |
| Frequency of physical exercise (times/week) | ||||||
| ⩾2 | 39 | 31 | 85 | 69 | 1.0 | |
| ⩽1 | 21 | 39 | 33 | 61 | 1.4 | 0.7 to 2.7 |
| Health status | ||||||
| Very good/rather good | 43 | 36 | 77 | 64 | 1.0 | |
| Average/rather poor/very poor | 18 | 32 | 39 | 68 | 0.8 | 0.4 to 1.6 |
| Mental stress | ||||||
| None/little | 30 | 34 | 58 | 66 | 1.0 | |
| Some/fairly much/much | 30 | 34 | 59 | 66 | 1.0 | 0.5 to 1.8 |
| Mental strain | ||||||
| Never/rather seldom | 33 | 33 | 66 | 67 | 1.0 | |
| Sometimes/rather often/continually | 27 | 35 | 50 | 65 | 1.1 | 0.6 to 2.0 |
| Depression | ||||||
| Never/rather seldom | 37 | 32 | 80 | 68 | 1.0 | |
| Sometimes/rather often/continually | 23 | 38 | 37 | 62 | 1.3 | 0.7 to 2.6 |
| Job satisfaction | ||||||
| Very satisfied/rather satisfied | 45 | 33 | 90 | 67 | 1.0 | |
| Neutral/rather/very dissatisfied | 15 | 36 | 27 | 64 | 1.1 | 0.5 to 2.3 |
| Time used for domestic activities (hours/day) | ||||||
| <1 | 12 | 25 | 36 | 75 | 1.0 | |
| ⩾1 | 48 | 37 | 80 | 63 | 1.8 | 0.8 to 3.7 |
| Time used for hobbies (hours/day) | ||||||
| <1 | 45 | 32 | 94 | 68 | 1.0 | |
| ⩾1 | 15 | 41 | 22 | 59 | 1.4 | 0.7 to 3.0 |