Table 1 No. of cases and controls by age at baseline smear

From: Human papillomavirus infection in women who develop high-grade cervical intraepithelial neoplasia or cervical cancer: a case–control study in the UK

Baseline age (years)

Cases (total)

CIN 2

CIN 3

Cancer

Controls

Under 20

97

30

63

4

100

20–39

267

80

173

14

269

40 or over

200

57

110

33

222

Total

564

167

346

51

591

  1. CIN=cervical intraepithelial neoplasia.
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