| Titre : | Incidence of appendicitis during pregnancy. (2001) |
| Auteurs : | Roland-Eb ANDERSSON ; Mats LAMBE |
| Type de document : | Article |
| Dans : | International journal of epidemiology (vol. 30, n° 6, 2001) |
| Pagination : | 1281-1285 |
| Langues: | Anglais |
| Mots-clés : | Grossesse ; Appendicite ; Femme ; Epidémiologie ; Incidence ; Facteur risque ; Homme ; Enquête cas témoin ; Suède ; Europe ; Appareil digestif [pathologie] ; Intestin [pathologie] |
| Résumé : | [BDSP. Notice produite par INIST-CNRS vHoymR0x. Diffusion soumise à autorisation]. Background The aetiology and pathogenesis of appendicitis remains unknown. A relation with female sex hormones has been proposed because of a lower incidence among women and incidence variations during the menstrual cycle, but studies have given inconsistent results. Pregnancy constitutes a period of dramatic increases in levels of female sex hormones, but the incidence of appendicitis during child-bearing is not known. Methods Case-control study of pregnancy status at the time of appendectomy of 53 058 women and of 53 058 population-based age-matched controls. Cases and controls were identified by linkage of the Swedish Inpatient Register and the nationwide census. Pregnancy status at the time of operation was obtained by linkage with the Swedish Fertility Register. Differences in pregnancy status were analysed using conditional logistic regression and expressed as odds ratios (OR) with 95% CI. Results Fewer patients than expected with appendicitis were pregnant compared with the controls, especially in the third trimester (OR=0.49,95% CI : 0.30-0.79 for perforated and OR=0.33,95% CI : 0.28-0.39 for non-perforated appendicitis). Conclusions The reduced incidence of appendicitis suggests a protective effect of pregnancy, especially in the third trimester. |
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