The effectiveness of cervical screening: a population-based case-control study.
van der Graaf Y, Zielhuis G A, Peer P G, +1 more·Journal of clinical epidemiology
The cervical smear histories of 36 women with invasive cervical cancer were compared to those of 120 age-matched controls, drawn from local registrar's offices. Of the cases 47% were screened at least once, while for the controls this figure was 68%. The relative risk of getting invasive cervical cancer for women scree…