Table 5. Invasive squamous cell carcinoma of skin: age-standardised incidence rates by sex, deprivation quintile and calendar period of diagnosis.

Sex	Deprivation quintile	1978–80	1981–83	1984–86	1987–89	1990–92	1993–95	1996–98	1999–01	2002–04	P-value for trend over time
Males	All	16.1	15.8	16.6	20.4	22.8	27.0	36.1	33.9	36.9	<0.001
	1	15.4	19.5	20.5	22.8	26.1	32.2	38.8	36.7	42.2	<0.001
	2	17.7	17.5	16.6	23.0	24.6	30.4	39.1	36.2	41.2	<0.001
	3	20.0	15.6	16.8	20.0	21.5	26.2	34.4	33.4	36.4	<0.001
	4	12.6	13.0	14.2	19.1	23.1	26.5	35.3	32.7	33.4	<0.001
	5	14.7	13.1	15.1	16.9	18.4	19.6	32.8	30.8	31.5	<0.001
Ratio 1 : 5		1.0	1.5	1.4	1.4	1.4	1.6	1.2	1.2	1.3	—
Females	All	6.3	6.2	7.0	7.7	8.9	10.8	14.1	14.5	13.8	<0.001
	1	6.7	6.0	8.1	8.2	9.4	10.6	12.3	14.1	15.5	0.004
	2	6.2	7.0	6.8	7.3	9.5	14.2	13.8	15.5	15.0	0.001
	3	6.6	6.3	7.6	8.3	8.8	10.0	14.1	13.5	14.3	0.008
	4	5.4	6.0	6.6	7.6	8.2	10.5	14.6	14.3	12.3	0.004
	5	6.7	5.7	5.9	6.8	8.3	8.9	15.8	14.9	12.0	0.004
Ratio 1 : 5		1.0	1.1	1.4	1.2	1.1	1.2	0.8	0.9	1.3	—