Table 4.

Logistic regression results of several nailfold capillary characteristics associated with the habits of smoking and alcohol intake in the HAVS and NVEC groups

Control factor(s)	N (n=74)	Wald	p Value	OR (95% CI)
Haemorrhages, n (%)
Smoking	62 (83.8)	0.286	>0.05	1.412 (0.398 to 5.007)
Alcohol drinking	40 (54.1)	0.232	>0.05	0.789 (0.301 to 2.071)
Enlarged capillaries, n (%)
Smoking	62 (83.8)	1.485	>0.05	2.192 (0.621 to 7.740)
Alcohol drinking	40 (54.1)	0.629	>0.05	1.462 (0.572 to 3.739)
Avascular areas, n (%)
Smoking	62 (83.8)	0.017	>0.05	1.085 (0.313 to 3.755)
Alcohol drinking	40 (54.1)	0.522	>0.05	0.713 (0.284 to 1.787)
VWF, n (%)
Smoking	62 (83.8)	0.693	>0.05	1.703 (0.486 to 5.960)
Alcohol drinking	40 (54.1)	0.005	>0.05	0.968 (0.386 to 2.432)

HAVS, hand-arm vibration syndrome; NVEC, non-vibration-exposed controls; VWF, vibration-induced white finger.