Proliferation of prenatal ultrasonography.

ABSTRACT:

Background

The extent to which temporal increases in the use of prenatal ultrasonography reflect changes in maternal risk is unknown. In this population-based study, we examined the use of prenatal ultrasonography from 1996 to 2006 in Ontario.

Methods

With fiscal year 1996/97 as the baseline, we evaluated the relative risk (RR) and 95% confidence interval (CI) for the change in rates of ultrasonography for each subsequent year. The RR was adjusted for maternal age, income, rural residence, maternal comorbidities, receipt of genetics consultation or amniocentesis--all in the index pregnancy--and history of complications in a prior pregnancy.

Results

The study sample consisted of 1 399 389 singleton deliveries. The rate of prenatal ultrasonography increased from 2055 pe

SUBMITTER: You JJ 

PROVIDER: S-EPMC2817321 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature