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Time-trends in pregnancy: findings from Portugal

Lopes, Sofia; Teixeira, Cristina; Barros, Henrique
Fonte: Jean-Jacques Amy Publicador: Jean-Jacques Amy
Tipo: Conferência ou Objeto de Conferência
Relevância na Pesquisa
To examine trends in pregnancy and abortion rates observed in Portugal in the last decade. We abstracted all delivery and abortionrelated-admissions to Portuguese public hospitals (2000–2010) using a nationwide inpatient database(corresponding to nearly 96% of all deliveries). We computed age-specific pregnancy and termination of pregnancy rates (all and induced abortion)considering the age groups less than 15, 15–19, 20–34, 35–39 and more than 39 years, using national population estimates as denominator. Joinpoint regression was used to estimate average annual percent change (AAPC) in rates and to identify points in time when significant changes in trend occurred. Youngest teenager pregnancy rates (less than 15 yrs.)decreased significantly from 0.6 to 0.3 per 1000 women (AAPC=-4.9%; p=0.01) with a non-significant decrease in abortion rates (AAPC=-4.1%; p=0.100). Pregnancy and abortion rates per 1000 15–19 year old girls, showed no significant variation up to 2003 (AAPC=-1.8%;p=0.071 for pregnancy and AAPC=2.5%; p=0.449 for abortion). Then, a significant decrease was observed either in pregnancy (from 20.1 to 14.6; AAPC=-5.2%; p<0.001) and in abortion rates (from 2.5 to 1.5; AAPC =-8.2%; p<0.001). Pregnancy rates per 1000 women aged 20–34 decreased from 78.1 to 66.5. It corresponded to a significant decline up to 2004 (AAPC=-3.1%; p=0.020) but a stable course onwards (AAPC=-0.6%; p=0.389). Abortion rates in this age group steadily decreased from 7.7 to 5.5 per 1000 women (AAPC=-3.24%; p<0.001). In contrast...