Table 2.
The number and percentage of males with and without LBP according to health status and the age-adjusted odds ratios with 95% confidence intervals for the association between LBP and health status calculated by logistic regression
| Background variable | Number (%) | OR (95% CI) | |
|---|---|---|---|
| Health status | LBP+ | LBP− | |
| Height (quartiles) | |||
| First | 207 (23.4) | 1,436 (24.6) | 1.0 |
| Second | 238 (26.9) | 1,576 (27.0) | 1.1 (0.8–1.3) |
| Third | 222 (25.1) | 1,495 (25.7) | 1.0 (0.8–1.3) |
| Fourth | 219 (24.7) | 1,321 (22.7) | 1.1 (0.9–1.4) |
| Body mass index | |||
| Normal (BMI under 25 kg/m2) | 621 (70.5) | 4,170 (71.9) | 1.0 |
| Overweight (BMI 25–30 kg/m2) | 214 (24.3) | 1,255 (21.6) | 1.1 (0.9–1.3) |
| Obese (BMI over 30 kg/m2) | 46 (5.2) | 374 (6.4) | 0.8 (0.6–1.1) |
| Self-perceived health status | |||
| Good | 148 (16.8) | 1,299 (22.3) | 1.0 |
| Average | 391 (44.3) | 2,728 (46.7) | 1.3 (1.0–1.5) |
| Below-average | 344 (39.0) | 1,809 (31.0) | 1.6 (1.3–2.0) |
| Diseases (other than back-related) diagnosed by physician during past year | |||
| None | 163 (18.2) | 1,579 (26.7) | 1.0 |
| One | 431 (48.2) | 2,953 (50.0) | 1.4 (1.2–1.7) |
| Two or more | 300 (33.6) | 1,375 (23.3) | 2.1 (1.7–2.6) |