Table 3.

Incidence rate ratios of non-melanoma skin cancer during follow-up to 2004, for subjects with a cutaneous malignant melanoma (CMM), basal cell carcinoma (BCC) or squamous cell carcinoma (SCC) of the skin during 1998–99 classified by their self-reported dietary fat intake at that time.

Fat score*	Events†	PY‡	Rate§	IRR (95%CI)¶
Both sexes
	CMM
1–21 points	12	426.1	28.2	1.00
22–28 points	11	495.5	22.2	0.72(0.31–1.68)
29–51 points	9	327.6	27.5	0.82(0.32–2.05)
Trend				p = 0.64
	BCC
1–21 points	38	311.5	122.0	1.00
22–28 points	28	303.9	92.1	0.67(0.39–1.14)
29–51 points	31	270.4	114.7	0.83(0.48–1.42)
Trend				p = 0.51
	SCC
1–21 points	19	325.2	58.4	1.00
22–28 points	20	317.9	62.9	0.79(0.41–1.55)
29–51 points	17	273.5	62.2	0.83(0.42–1.67)
Trend				p = 0.61

NOTES

* Based on frequency of consumption of 17 foods high in fat.

† Number of new BCC or SCC lesions during follow-up.

‡ Person-years of observation from date of diagnosis in 1998–99 to end of follow-up on 31 August, 2004.

§ Incidence per 1,000 person-years.

¶ Incidence rate ratio (95% confidence interval) adjusted for sex, age and density of cutaneous melanin at the upper inner arm.