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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.

From: Musculoskeletal symptoms and computer use among Finnish adolescents - pain intensity and inconvenience to everyday life: a cross-sectional study

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)
  1. Multinominal logistic regression analysis, adjusted for grade and sex
  2. *n = Number of cases
  3. **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).
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