Risk factor | No.* | Low back pain | Sciatica | Troublesome low back pain | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. | (%) +ve | PR | (95% CI) | No. | (%) +ve | PR | (95% CI) | No. | (%) +ve | PR | (95% CI) | ||
*A few subjects failed to provide answers to all the questions. | |||||||||||||
†Rock crushers, concrete production machinery, tractors, loaders, excavators, bulldozers, graders, scrapers, dumpers, road rollers, mowers, off-road forestry vehicles, armoured vehicles, forklift trucks, mobile cranes, lorries, helicopters, other aircraft, high speed boats, hoists/lifts, ambulances, boats, off road cars/vans, quad bikes, fire engines, milk floats, conveyor belts, agricultural vehicles. | |||||||||||||
Risk estimates were mutually adjusted and adjusted also for age (classified as in table 1), height (in five bands), smoking, frequent headaches, and frequent tiredness or stress. | |||||||||||||
Men | |||||||||||||
Use of industrial vehicle(s)† | |||||||||||||
No | 3058 | 1554 | (50.8) | 1.0 | 404 | (13.3) | 1.0 | 934 | (30.8) | 1.0 | |||
Yes | 1065 | 661 | (62.1) | 1.1 | (1.0 to 1.2) | 165 | (15.6) | 1.0 | (0.9 to 1.2) | 404 | (38.2) | 1.1 | (1.0 to 1.3) |
Lifting weights of ⩾10 kg by hand in an average working day | |||||||||||||
No | 2100 | 960 | (45.7) | 1.0 | 218 | (10.4) | 1.0 | 554 | (26.6) | 1.0 | |||
Yes | 2023 | 1255 | (62.0) | 1.3 | (1.3 to 1.4) | 351 | (17.5) | 1.7 | (1.5 to 2.0) | 784 | (39.0) | 1.5 | (1.3 to 1.6) |
Women | |||||||||||||
Use of industrial vehicle(s)† | |||||||||||||
No | 2881 | 1256 | (43.6) | 1.0 | 404 | (14.1) | 1.0 | 757 | (26.3) | 1.0 | |||
Yes | 70 | 42 | (60.0) | 1.3 | (1.0 to 1.6) | 19 | (27.1) | 1.9 | (1.2 to 2.9) | 27 | (39.1) | 1.5 | (1.0 to 2.0) |
Lifting weights of ⩾10 kg by hand in an average working day | |||||||||||||
No | 2303 | 921 | (40.0) | 1.0 | 284 | (12.4) | 1.0 | 536 | (23.3) | 1.0 | |||
Yes | 648 | 377 | (58.2) | 1.4 | (1.3 to 1.6) | 139 | (21.8) | 1.7 | (1.4 to 2.0) | 248 | (38.5) | 1.7 | (1.5 to 1.9) |