Table 2.
Odds ratios (OR) and 95% confidence intervals (Cl) for multivariate associations between computer use/week and level of inconvenience to everyday life caused by musculoskeletal pain, and intensity of computer-associated musculoskeletal pain.
| Symptoms | Computer use time/week | ||
|---|---|---|---|
| < 3.6 hours | 3.6 - 13.99 hours | ≥ 14 hours | |
| n* OR**(95%Cl) | n OR (95%Cl) | n OR (95%Cl) | |
| Neck or shoulder | |||
| Level of inconvenience to everyday life | |||
| Severe/moderate | 27 1.0 | 40 1.3 (0.7-2.5) | 31 1.1 (0.5-2.2) |
| Mild | 29 1.0 | 50 1.3 (0.7-2.3) | 39 1.1 (0.6-2.1) |
| Pain intensity | |||
| Severe/moderate | 17 1.0 | 42 2.6 (1.3-5.3) | 35 2.9 (1.4-6.1) |
| Mild | 26 1.0 | 44 1.6 (0.9-2.9) | 41 1.9 (1.0-3.6) |
| Low back | |||
| Level of inconvenience to everyday life | |||
| Severe/moderate | 15 1.0 | 26 1.5 (0.7-3.2) | 34 2.5 (1.2-5.5) |
| Mild | 18 1.0 | 39 1.8 (0.9-3.5) | 33 2.1 (1.0-4.3) |
| Pain intensity | |||
| Severe/moderate | 9 1.0 | 19 1.6 (0.7-3.8) | 32 3.5 (1.5-8.3) |
| Mild | 14 1.0 | 37 2.4 (1.2-4.8) | 34 3.1 (1.5-6.7) |
| Head | |||
| Level of inconvenience to everyday life | |||
| Severe/moderate | 26 1.0 | 55 2.0 (1.0-3.8) | 44 2.0 (1.0-4.1) |
| Mild | 37 1.0 | 50 1.0 (0.6-1.9) | 45 1.0 (0.5-1.9) |
| Pain intensity | |||
| Severe/moderate | 16 1.0 | 36 2.4 (1.2-4.8) | 34 3.4 (1.6-7.2) |
| Mild | 16 1.0 | 42 2.6 (1.3-5.0) | 37 3.0 (1.5-6.3) |
| Eyes | |||
| Level of inconvenience to everyday life | |||
| Severe/moderate | 12 1.0 | 16 1.1 (0.5-2.6) | 21 1.9 (0.8-4.5) |
| Mild | 12 1.0 | 27 1.6 (0.7-3.3) | 30 2.2 (1.0-4.8) |
| Pain intensity | |||
| Severe/moderate | 11 1.0 | 22 1.8 (0.8-4.2) | 25 3.3 (1.4-7.8) |
| Mild | 16 1.0 | 38 2.0 (1.0-3.9) | 44 3.6 (1.8-7.3) |
| Hands, fingers or wrists | |||
| Level of inconvenience to everyday life | |||
| Severe/moderate | 7 1.0 | 10 1.5 (0.5-4.7) | 14 2.7 (0.9-8.3) |
| Mild | 15 1.0 | 31 1.4 (0.7-2.7) | 24 1.2 (0.6-2.5) |
| Pain intensity | |||
| Severe/moderate | 4 1.0 | 12 2.3 (0.7-7.3) | 15 4.4 (1.3-14.5) |
| Mild | 18 1.0 | 21 0.9 (0.4-1.8) | 27 1.7 (0.8-3.6) |
Multinominal logistic regression analysis, adjusted for grade and sex
*n = Number of cases
**The reference category (no pain/no inconvenience) is indicated by an odds ratio (OR) of 1.0. Odds ratios are given in bold when they indicate a statistically significant difference from the odds of the reference category at 95% confidence level (CI).