Table 4.
Multivariate logistic regression, for associations of variables with low back pain in high school adolescents.
| Factors | Low back pain. |
|
|---|---|---|
| Value of p | PR adjusted (95% CI) | |
| Sex | ||
| Male | < 0.001 | 1.00 |
| Female | 1.70 (1.39–2.07) | |
| Number of hours of TV/day | ||
| Up to 2 h | 0.032 | 1.00 |
| Above 3 h | 1.17 (1.01–1.36) | |
| Type of computer | ||
| Desktop | 1.00 | |
| Laptop | 0.005 | 1.40 (1.10–1.77) |
| Desktop and laptop | 0.499 | 1.18 (0.72–1.94) |
| What posture is the cell phone used | ||
| Lying down | ||
| No | 0.042 | 1.00 |
| Yes | 1.23 (1.00 1.52) | |
| Semi-lying down | ||
| No | < 0.001 | 1.00 |
| Yes | 1.49 (1.20–1.83) | |
| Daily use time (cell phone) | ||
| Up to 2 h | 0.003 | |
| 3 h or more | 1.36 (1.11–1.68) | |
| Use of tablet | ||
| No | < 0.001 | 1.00 |
| Yes | 1.67 (1.31–2.14) | |
| Daily use time (tablet) | ||
| Up to 2 h | < 0.001 | 1.00 |
| 3 h or more | 1.46 (1.21–1.76) | |
| Mental health problems | ||
| Normal | < 0.001 | 1.00 |
| Borderline | 1.67 (0.98–2.13) | |
| Clinical | 2.62 (2.03–3.38) | |
CI, confidence interval; PR, prevalence ratio.