Table 6

Relations between occupational load and shoulder pain

Exposure	Total	Shoulder pain n (%)	Adjusted for age and sex OR (95% CI)
Lifting >25 lb (11 kg) with one hand:	Yes	228	71 (31)	1.8 (1.3 to 2.6)
Lifting >25 lb (11 kg) with one hand:	No	832	148 (18)	1.8 (1.3 to 2.6)

Lifting >50 lb (23 kg) with two hands	Yes	103	41 (34)	2.7 (1.7 to 4.2)
Lifting >50 lb (23 kg) with two hands	No	950	176 (19)	2.7 (1.7 to 4.2)

Carrying >50 lb (23 kg) on one shoulder	Yes	100	45 (45)	3.1 (1.9 to 4.8)
Carrying >50 lb (23 kg) on one shoulder	No	962	173 (18)	3.1 (1.9 to 4.8)

Lift >25 lb (11 kg) at or above shoulder level	Yes	146	50 (34)	2.0 (1.3 to 3.0)
Lift >25 lb (11 kg) at or above shoulder level	No	911	162 (18)	2.0 (1.3 to 3.0)

Pulling >50 lb (23 kg)	Yes	168	45 (27)	1.6 (1.1 to 2.4)
Pulling >50 lb (23 kg)	No	892	170 (19)	1.6 (1.1 to 2.4)

Pushing >100 lb (45 kg)	Yes	136	37 (27)	1.5 (0.97 to 2.4)
Pushing >100 lb (45 kg)	No	921	177 (19)	1.5 (0.97 to 2.4)

Driving ⩾15 minutes	Yes	101	18 (18)	0.8 (0.4 to 1.3)
Driving ⩾15 minutes	No	976	202 (21)	0.8 (0.4 to 1.3)

Stretching down below knee level ⩾15 minutes	Yes	138	37 (27)	1.4 (0.9 to 2.1)
Stretching down below knee level ⩾15 minutes	No	931	182 (20)	1.4 (0.9 to 2.1)

Bending forwards in an uncomfortable position ⩾15 minutes	Yes	288	77 (27)	1.6 (1.2 to 2.2)
Bending forwards in an uncomfortable position ⩾15 minutes	No	772	144 (19)	1.6 (1.2 to 2.2)

Hands above shoulder level ⩾15 minutes	Yes	223	54 (24)	1.3 (0.9 to 1.8)
Hands above shoulder level ⩾15 minutes	No	839	163 (19)	1.3 (0.9 to 1.8)

Repetitive arm movements ⩾2 h	Yes	291	65 (22)	1.2 (0.9 to 1.7)
Repetitive arm movements ⩾2 h	No	774	152 (20)	1.2 (0.9 to 1.7)