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. 2011 Jul 15;11:566. doi: 10.1186/1471-2458-11-566

Table 3.

Rate of persistent neck pain and adjusted odds ratio (ORadj) with 95% confidence intervals (95%CI) with respect to factors in the final modeling (n = 524)

Factors N Persistent rate
n (%)
ORadj 95%CI P
Year of study
- 1st year 183 21 (11.5) 1.00
- 2nd year 247 47 (19.0) 1.90 1.08-3.35 0.027*
- 3rd year 91 10 (11.0) 0.96 0.42-2.15 0.912
- 5th year 3 1 (33.3) 7.09 0.57-87.70 0.127
Percent time of computer use for entertainment
- < 70 426 70 (16.4) 1.00
- ≥ 70 98 7 (9.2) 0.44 0.21-0.95 0.036*
Elbows positioned at 90° angle
- Yes 129 13 (10.1) 1.00
- No 395 66 (16.7) 1.76 0.92-3.35 0.087
Keyboard height
- Suitable 370 52 (14.1) 1.00
- Too high 85 22 (25.9) 2.18 1.21-3.91 0.009*
- Too low 69 5 (7.2) 0.46 0.17-1.20 0.113

Significance and ORadj with 95%CI from multivariate analysis

*P< 0.05.