Table 1 Relative risk (RR) and 95% confidence intervals (CI) for newly diagnosed and exacerbated low back pain (LBP) among soldiers (18–21 years), by severity of disease and occupational category
From: The relationship between low back pain and professional driving in young military recruits
Severity of LBP at recruitment | Occupational Categories | Incident cases (IR*) for 3 years | Incident cases (IR*) per year | RR (95% CI) | P |
|---|---|---|---|---|---|
Category 1 (No history of LBP) | Administrative (n = 61,046) | 2.09% | 0.7% | 1 | |
Car drivers (n = 3254) | 2.09% | 0.7% | 1.0 (0.79–1.28) | 0.957 | |
Truck drivers (n = 9689) | 1.02% | 0.34% | 0.49 (0.40–0.60) | < 0.0001 | |
Total | n = 73,989 | 1.95% | 0.65% | – | – |
Category 2 (Mild LBP) | Administrative (n = 4612) | 2.67% | 0.89% | 1 | |
Car drivers (n = 333) | 3.00% | 1.00% | 1.13 (0.60–2.12) | 0.724 | |
Truck drivers (n = 743) | 2.75% | 0.92% | 1.03 (0.5–1.81) | 0.881 | |
Total | n = 5418 | 2.69% | 0.90% | – | – |
Category 3 (LBP with mild clinical/radiographic findings) | Administrative (n = 1066) | 7.41% | 2.47% | 1 | |
Car drivers (n = 60) | 10.00% | 3.33% | 1.35 (0.61–2.97) | 0.448 | |
Truck drivers (n = 66) | 6.06% | 2.02% | 0.82 (0.31–2.16) | 1.000 | |
Total | n = 1192 | 7.47% | 2.49% | – | – |