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

From: Impact of cervical screening on cervical cancer mortality: estimation using stage-specific results from a nested case–control study

  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
  1. aReported by ONS (Office for National Statistics, 2015).
  2. 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.
  3. cEstimated as the ratio of the estimated vs observed deaths. 95% CI calculated were obtained from the combined variance of the individual age groups.