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. Author manuscript; available in PMC: 2009 Oct 6.
Published in final edited form as: Arthritis Rheum. 2009 May 15;61(5):641–647. doi: 10.1002/art.24464

Table 1. Characteristics of the Wuchuan County study participants.

Men
(n = 505)		 Women
(n = 520)
Age,
 50-59* years 65% 73%
 60-69 years 22% 17%
 70+ years 13% 10%
Biometrics mean (sd) mean (sd)
Height (cm) 166.2 (6.3) 155.2 (6.1)
Weight (kg) 59.7 (8.9) 56.2 (9.5)
Body mass index (kg.m-1) 21.6 (2.7) 23.3 (3.5)
Years of education
 0 years 23% 51%
 1-6 years 38% 37%
 7-9 years 33% 11%
 >10 years 6% 2%
Main occupation farming 94% 88%
Still working 90% 81%
*

Includes 50 participants aged 48 and 49 at the time of survey.