Table 1.

Characteristics of the study population

	Men				Women				Total
	No neck pain		Neck pain		No neck pain		Neck pain		No neck pain		Neck pain
	%	N	%	N	%	N	%	N	%	N	%	N
	75	3,462	25	1,136	57	2,705	43	2,076	66	6,167	34	3,212
Age category
16–29 y	14	493	11	123	14	379	14	282	14	872	13	405
30–49 y	48	1,649	44	503	47	1,278	46	948	47	2,927	45	1,451
50–64 y	38	1,320	45	510	39	1,048	41	846	38	2,368	42	1,356
Work ability score
1–7 (Moderate, poor)	11	386	24	270	10	281	23	470	11	667	23	740
8–9 (Good)	32	1,098	36	409	27	727	31	652	30	1,825	33	1,061
10 (Excellent)	57	1,978	40	457	63	1,697	46	954	60	3,675	44	1,411

N, number of workers; work ability score range = 1–10.