Table 3.

Univariate analyses for wrist/hand symptoms and clinically confirmed CTS

Predictors	Symptomatic (n=373) vs. Asymptomatic (n=596) OR (95% CI)	Clinically confirmed CTS (n=93) vs. Clinically uncertain CTS (n=280) OR (95% CI)
Age	1.02 (0.99 to 1.04)	1.00 (0.96 to 1.04)
Gender
Male	1	1
Female	1.27 (0.97 to 1.66)	1.70 (1.01 to 2.85)
BMI
	1.07 (1.02 to 1.11)	1.04 (0.96 to 1.14)
Education
Secondary & below	1	1
Diploma	0.37 (0.21 to 0.66)	0.28 (0.06 to 1.27)
Bachelor	0.57 (0.37 to 0.88)	0.58 (0.05 to 7.42)
Master & above	0.89 (0.59 to 1.34)	0.21 (0.04 to 0.99)
Smoking
Yes	1.60 (1.07 to 2.37)	1.22 (0.60 to 2.49)
No	1	1
Working department
Information & Technology	1	1
Finance & Accounting	1.70 (1.18 to 2.44)	0.71 (0.23 to 2.18)
Marketing	0.63 (0.37 to 1.10)	0.66 (0.24 to 1.77)
Human Resources	0.82 (0.49 to 1.36)	0.31 (0.13 to 0.76)
Sales	0.66 (0.40 to 1.07)	0.87 (0.38 to 2.01)
Others	0.65 (0.44 to 0.95)	0.63 (0.33 to 1.20)
Working experience (yr)	1.03 (1.00 to 1.06)	0.99 (0.94 to 1.05)
Daily computer use (hr)	1.07 (1.01 to 1.12)	0.96 (0.88 to 1.06)
Daily keyboard use (hr)	1.05 (1.01 to 1.11)	1.02 (0.93 to 1.12)
Breaks at work
Yes	1	1
No	1.68 (1.15 to 2.44)	1.33 (0.68 to 2.59)
Adjust posture at work
Yes	1	1
No	1.71 (1.24 to 2.36)	1.34 (0.75 to 2.41)
Working in pain
Never	1	1
Rarely	1.61 (1.11 to 2.35)	2.01 (0.55 to 7.24)
Sometimes	1.68 (1.10 to 2.56)	1.82 (0.53 to 6.28)
Often	2.41 (1.47 to 3.94)	3.02 (0.89 to 10.24)
Always	1.81 (0.76 to 4.32)	3.45 (0.94 to 12.73)
Decision control at work
Never	1.87 (1.13 to 3.10)	2.08 (0.46 to 9.36)
Rarely	1.35 (0.84 to 2.18)	1.30 (0.37 to 4.52)
Sometimes	1.32 (0.80 to 2.19)	1.35 (0.39 to 4.62)
Often	0.73 (0.34 to 1.53)	1.53 (0.43 to 5.46)
Always	1	1

Abbreviations: CTS carpal tunnel syndrome, BMI body mass index, OR odds ratio, CI confidence interval, yr year, hr. hour