Table 4. Estimated relative 5-year cervical cancer mortality under an absence of screening and regular screening compared with current screening.

	Relative 5-year mortality compared with current screening
Age group at diagnosis (years)	In the absence of screening	For regular screening	Age group at death (years)	Observed deaths (average 2011–2014)a	Estimated deaths in the absence of screening	Estimated deaths with regular screening
25–34b	1.96 (1.66–2.31)	0.68 (0.61–0.76)	25–39	103	202	70
35–49	4.13 (3.59–4.75)	0.42 (0.38–0.47)	40–54	175	721	73
50–64	5.30 (4.36–6.44)	0.35 (0.33–0.37)	55–69	199	1054	70
65–79	2.51 (2.18–2.90)	0.61 (0.58–0.65)	70–84	216	542	132
25–79	3.64 (3.29–4.03)c	0.50 (0.48–0.52)c	25–84	692	2519	345
All ages	3.30 (2.92–3.72)c	0.56 (0.55–0.58)c	All ages	796	2623	449

^aReported by ONS (Office for National Statistics, 2015).

^bNote that we have included women aged 25–25.5 years so as to estimate the effect of the screening programme as a whole. OR for women aged 25.5–34 and 24.5–34 years are presented in the Supplementary Table.

^cEstimated as the ratio of the estimated vs observed deaths. 95% CI calculated were obtained from the combined variance of the individual age groups.