Table 2.

Relative risk (RR) of squamous cell and basal cell carcinoma of the skin by smoking status reported at recruitment

	Squamous cell carcinoma		Basal cell carcinoma
	N	RR (95% CI)	N	RR (95% CI)
All cutaneous lesions
Never-smoker	3509	1.00	26,996	1.00
Ex-smoker	1857	1.00 (0.95–1.06)	14,312	0.99 (0.97–1.01)
Current smoker	1333	1.22 (1.15–1.31)	7358	0.80 (0.78–0.82)
<15 cigarettes/day	682	1.14 (1.05–1.24)	3976	0.80 (0.77–0.83)
≥15 cigarettes/day	651	1.34 (1.23–1.46)	3382	0.80 (0.77–0.83)
Lesions on the face
Never-smoker	1097	1.00	9525	1.00
Ex-smoker	534	0.93 (0.84–1.04)	5136	0.99 (0.96–1.03)
Current smoker	317	0.93 (0.82–1.06)	3193	0.92 (0.88–0.96)
<15 cigarettes/day	151	0.80 (0.68–0.95)	1662	0.90 (0.85–0.95)
≥15 cigarettes/day	166	1.09 (0.92–1.29)	1531	0.94 (0.89–0.99)
Lesions on the limbs
Never-smoker	1437	1.00	2657	1.00
Ex-smoker	798	1.05 (0.96–1.15)	1409	0.98 (0.92–1.05)
Current smoker	663	1.55 (1.41–1.71)	652	0.72 (0.66–0.79)
<15 cigarettes/day	358	1.50 (1.34–1.69)	362	0.74 (0.66–0.83)
≥15 cigarettes/day	305	1.61 (1.42–1.83)	290	0.70 (0.62–0.79)