. Author manuscript; available in PMC: 2015 Aug 28.

Published in final edited form as: Occup Environ Med. 2013 Jun 20;70(8):568–574. doi: 10.1136/oemed-2012-101287

Table 1.

Characteristics of the study group

	Mean or number (%)		CTS non-cases (n=318)	CTS cases (n=29)	p Value (χ² or t test)
	All (n=347)	Range (SD)	CTS non-cases (n=318)	CTS cases (n=29)	p Value (χ² or t test)
Gender					0.27
Male	201 (57.9)		53.9	48.3
Female	146 (42.1)		46.1	51.7
Age (years)	40.5	19–68 (10.7)	40.5 (10.5)	41.6 (12.3)	0.58
BMI (kg/m²)	29.5	18.1–61.6 (6.3)	29.4 (6.4)	30.7 (4.8)	0.29
<30	201 (57.9)		60.1	34.5
≥30	146 (42.1)		39.9	65.5	0.01
High school education	333 (96.0)		95.9	96.6	0.87
Current smoking	82 (23.6)		23.0	31.0	0.33
Diabetes	22 (6.3)		6.9	0.0	0.14
Thyroid disease	29 (8.4)		7.9	13.8	0.23
Prior non-dominant hand CTS	11 (3.2)		2.5	10.3	0.02
Years worked at plant	9.8	0.25–20 (8.1)	9.6 (8.1)	11.7 (8.0)	0.19

CTS, carpal tunnel syndrome.