Precancerous changes in the cervix and risk of subsequent preterm birth
- 26 October 2006
- journal article
- research article
- Published by Wiley in BJOG: An International Journal of Obstetrics and Gynaecology
- Vol. 114 (1), 70-80
- https://doi.org/10.1111/j.1471-0528.2006.01107.x
Abstract
The aims of this study were (i) to examine whether women referred for assessment of precancerous changes in the cervix had higher rates of preterm birth compared with those in the general population and (ii) to compare preterm birth rates for treated and untreated women adjusting for possible confounding factors. Retrospective cohort design. Teaching hospital. All women referred to the Royal Women's Hospital, Melbourne (1982-2000), who subsequently had a birth recorded on the Victorian Perinatal Data Collection system (n = 5548). Record linkage of hospital dysplasia clinic records and population-based birth records. Total preterm delivery (<37 weeks of gestation) and subtypes. Both treated and untreated women were at a significantly increased risk for preterm birth compared with those in the general population: treated--standardised prevalence ratio (SPR) 2.0, 95% CI 1.8-2.3 and untreated--SPR 1.5, 95% CI 1.4-1.7. Within the cohort, the treated women were significantly more likely to give birth preterm (adjusted OR 1.23, 95% CI 1.01-1.51). An increased risk of preterm birth was also associated with a history of induced or spontaneous abortions, illicit drug use during pregnancy or a major maternal medical condition. Cone biopsy, loop electrosurgical excision procedure and diathermy were associated with preterm birth. After adjusting for possible confounding factors, only diathermy remained significant (adjusted OR 1.72, 95% CI 1.36-2.17). Women treated using laser ablation were not at an increased risk for preterm birth (adjusted OR 1.1, 95% CI 0.8-1.4). Diagnosis of precancerous changes in the cervix (regardless of the treatment) was associated with an increased risk of preterm birth. Consideration should be given to the preferential use of ablative treatments.This publication has 40 references indexed in Scilit:
- Preterm birth in Sweden 1973–2001: Rate, subgroups, and effect of changing patterns in multiple births, maternal age, and smokingActa Obstetricia et Gynecologica Scandinavica, 2005
- Increased risk of preterm birth in singleton pregnancies resulting from in vitro fertilization–embryo transfer or gamete intrafallopian transfer: A meta-analysisFertility and Sterility, 2004
- Treatment for Cervical Intraepithelial Neoplasia and Risk of Preterm DeliveryJAMA, 2004
- RE: "A DICTIONARY OF EPIDEMIOLOGY, FOURTH EDITION, EDITED BY JOHN M. LAST, ROBERT A. SPASOFF, AND SUSAN G. HARRIS"American Journal of Epidemiology, 2001
- Duration of Pregnancy After Carbon Dioxide Laser Conization of the Cervix: Influence of Cone HeightObstetrics & Gynecology, 1997
- The Fertility of Women After Cervical Laser SurgeryObstetrics & Gynecology, 1995
- Cervical conization and preterm delivery/low birth weightActa Obstetricia et Gynecologica Scandinavica, 1993
- Epilepsy and Pregnancy ‐ A Review of 98 PregnanciesAustralian and New Zealand Journal of Obstetrics and Gynaecology, 1990
- Outcome of Pregnancy after Laser Vaporization ConizationJournal of Gynecologic Surgery, 1984
- THE OUTCOME OF PREGNANCY AFTER CONE BIOPSY OF THE CERVIX: A CASE‐CONTROL STUDYBJOG: An International Journal of Obstetrics and Gynaecology, 1979