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Table 4 Yield of CIN2+ lesions in the intervention and control groups

From: Preventing cervical cancer using HPV self-sampling: direct mailing of test-kits increases screening participation more than timely opt-in procedures - a randomized controlled trial

  Directly mailed group
Invited = 3265
  Opt-in group
Invited = 3264
  Control group Invited = 3262
  Self-sampling Cytology Total Self-sampling Cytology Total Cytology
  n n n n n n n
Number screened 635 607 1242 270 739 1009 823
CIN2+ detected 13 6 19 5 8 13 10a
CIN2+ per 1000 invited (95% CI) 4.0 (2.1–6.8) 1.8 (0.7–4.0) 5.8 (3.5–9.1) 1.5 (0.5–3.6) 2.5 (1.1–4.8) 4.0 (2.1–6.8) 3.1 (1.5–5.6)
CIN2+ per 1000 screened (95% CI) 20.5 (10.9–34.8) 9.9 (3.6–21.3) 15.3 (9.2–23.8) 18.5 (6.0–42.7) 10.8 (4.7–21.2) 12.9 (6.9–21.9) 12.2 (5.8–22.2)
  1. CIN2+: CIN2, CIN3/AIS and carcinoma. aOne case of squamous cell carcinoma