Table 5.
Bivariate and Multivariable Logistic Regression Analysis on Factors Associated with Computer Vision Syndrome (CVS) Among Secretaries Working in Ministry Offices, Addis Ababa, 2019 (n=455)
| Variables | CVS | COR (95% CI) | AOR (95% CI) | P value | |
|---|---|---|---|---|---|
| Yes | No | ||||
| Age (in years) | |||||
| 21–29 | 94 | 56 | 1 | 1 | |
| 30–39 | 116 | 56 | 1.234 (0.779,1.954) | 0.836 (0.437–1.600) | 0.589 |
| >39 | 103 | 30 | 2.045 (1.211,3.455) | 0.787 (0.351–1.767) | 0.562 |
| Average monthly income | |||||
| 1,500–2,500 ETB | 70 | 31 | 0.790 (0.470–1.327) | 0.588 (0.285–1.090) | 0.088 |
| 2,501–3,000ETB | 80 | 54 | 1 | 1 | |
| >3,000ETB | 163 | 57 | 0.518 (0.328–0.819) | 0.453 (0.235–0.874) | 0.018* |
| Seating position | |||||
| Appropriate | 121 | 90 | 1 | 1 | |
| Inappropriate | 192 | 52 | 2.746 (1.822,4.139) | 1.011 (0.448–2.281) | 0.978 |
| Viewing distance | |||||
| <20 cm | 226 | 94 | 1 | 1 | |
| ≥20 cm | 87 | 48 | 0.754 (0.492,1.155) | 1.005 (0.563–1.795) | 0.987 |
| Level of top of computer | |||||
| Above the eye level | 100 | 24 | 1 | 1 | |
| At the eye level | 96 | 89 | 0.259 (0.152,0.440) | 0.524 (0.218–1.262) | 0.149 |
| Below the eye level | 117 | 29 | 0.968 (0.530,1.770) | 0.738 (0.332–1.644) | 0.458 |
| Computer Eye glasses/spectacle use | |||||
| Yes | 76 | 237 | 0.263 (0.173,0.400) | 0.451 (0.245–0.830) | 0.011* |
| No | 78 | 64 | 1 | 1 | |
| Habit of voluntary blinking | |||||
| Yes | 31 | 51 | 0.197 (0.119–0.326) | 0.313 (0.150–0.655) | 0.002* |
| No | 282 | 91 | 1 | 1 | |
| Previous history of eye disease | |||||
| Yes | 36 | 8 | 2.177 (0.985–4.813) | 2.566 (0.964–6.835) | 0.059 |
| No | 134 | 134 | 1 | 1 | |
| Taking regular break | |||||
| Yes | 111 | 82 | 0.402 (0.268,0.603) | 0.279 (0.078–0.996) | 0.049* |
| No | 202 | 60 | 1 | 1 | |
| Length of break | |||||
| ≤20 minute | 110 | 81 | 0.417 (0.277–0.628) | 2.227(0.618–8.037) | 0.221 |
| >20 minute | 11 | 2 | 1 | 1 | |
| Source of light at working place | |||||
| Natural light | 220 | 141 | 0.017 (0.002–0.122) | 0.009 (0.001–0.076) | <0.001* |
| Fluorescent bulb | 93 | 1 | 1 | 1 | |
| Adjusting contrast and brightness | |||||
| Yes | 166 | 90 | 0.652 (0.434,0.980) | 1.701(0.915–3.161) | 0.093 |
| No | 147 | 52 | 1 | 1 | |
| Glare on the display | |||||
| Yes | 175 | 70 | 1.304 (0.877,1.941) | 0.836 (0.463–1.511) | 0.553 |
| No | 138 | 72 | 1 | 1 | |
| Using of anti-glare filter | |||||
| Yes | 73 | 87 | 0.192 (0.125–0.295) | 0.216 (0.117–0.401) | <0.001* |
| No | 240 | 55 | 1 | 1 | |
| Knowledge | |||||
| Adequate | 148 | 118 | 0.182 (0.112–0.298) | 0.212 (0.115–0.389) | <0.001* |
| Inadequate | 165 | 24 | 1 | 1 | |
Note: *statistically significant associations at p-value < 0.05.
Abbreviations: AOR, adjusted odds ratio; COR, crude odds ratio; CI, confidence interval.