Table 1 Demographic characteristics of subjects
LBP in 1 month | |||||
|---|---|---|---|---|---|
Total | Prevalence (%) | Test1) | PR non-adj 2) | 95% CI | |
Gender | |||||
Male | 998 | 72.2 | 1 | ||
Female | 4781 | 74.7 | n.s | 1.13 | 0.97–1.32 |
Age | |||||
≦39 | 1400 | 75.4 | 1 | ||
40 ~ 49 | 1764 | 74.8 | n.s | 0.97 | 0.82–1.14 |
50≦ | 2615 | 73.3 | 0.90 | 0.78–1.05 | |
Gender and age | |||||
Male | |||||
≦39 | 428 | 73.8 | 1 | ||
40 ~ 49 | 337 | 73.0 | n.s | 0.96 | 0.69–1.32 |
50≦ | 233 | 68.2 | 0.76 | 0.54–1.08 | |
Female | |||||
≦39 | 972 | 76.0 | 1 | ||
40 ~ 49 | 1427 | 75.2 | n.s | 0.96 | 0.79–1.16 |
50≦ | 2382 | 73.8 | 0.90 | 0.75–1.06 | |