Table 4

Results of logistic regression analysis examining the effects of demographic and occupational characteristics on musculoskeletal disorders in the last 12 months for various body regions

Occupational and demographic characteristics	Any†	Shoulder	Hand	Upper back	Lower back	Knee	Ankle
Occupation
Wage labourer‡
Waste picker	2.74***	3.52***	2.10*	1.95**	1.92**	1.41	2.99**
	1.47 to 5.13	1.69 to 7.36	0.83 to 5.33	1.05 to 3.66	1.08 to 3.44	0.79 to 2.53	1.22 to 7.38
Other	0.78	0.62	1.00	0.63	0.92	0.64	0.92
	0.43 to 1.42	0.26 to 1.45	0.36 to 2.78	0.32 to 1.27	0.50 to 1.68	0.35 to 1.17	0.33 to 2.59
Duration of work
Up to 4 years‡
5–10 years	1.93*	1.66	1.97	1.03	1.66	1.22	2.41
	1.03 to 3.63	0.71 to 3.87	0.69 to 5.65	0.52 to 2.04	0.89 to 3.11	0.65 to 2.32	0.76 to 7.61
Above 10 years	2.55***	2.01*	1.90	1.48	2.15**	1.61	2.51
	1.30 to 4.99	0.86 to 4.73	0.65 to 5.56	0.74 to 2.97	1.12 to 4.14	0.84 to 3.11	0.79 to 8.03
Age of respondents
18–30 years‡
31–40 years	0.96	1.51	1.23	1.28	0.92	1.16	0.76
	0.56 to 1.64	0.82 to 2.79	0.58 to 2.59	0.74 to 2.21	0.56 to 1.53	0.69 to 1.93	0.35 to 1.68
Above 40 years	2.31**	1.52	1.30	1.51	1.56*	2.69***	2.20*
	1.18 to 4.52	0.76 to 3.03	0.56 to 3.00	0.82 to 2.78	0.88 to 2.77	1.51 to 4.80	1.01 to 4.77

Adjusted for sex and household size of the respondents. Weekly working hours considered as effect modifier. Values are ORs and 95% CIs.*p<0.1, **p<0.05, ***p<0.01.
†Either the shoulder, hand, upper back, lower back, knee or ankle.
‡Reference category.