Objective
To estimate the frequency of pregnancy testing among adolescent emergency department (ED) patients and to determine factors associated with testing.
Methods
This was a retrospective cross-sectional study using the National Hospital Ambulatory Medical Care Survey (NHAMCS) from 2005-2009 of ED visits by females ages 14 to 21 years. We estimated the frequency of pregnancy testing among all visits, those for potential reproductive health complaints, and those associated with exposure to potentially teratogenic radiation. Multivariable logistic regression modeling was performed to calculate adjusted probabilities and odds ratios with 95% confidence intervals to evaluate factors associated with pregnancy testing by patient characteristics.
Results
We identified 11,531 visits, representing an estimated 41.0 million female adolescent ED visits. Of these, 20.9% (95% CI 19.3%, 22.5%) included pregnancy testing. Among visits for potential reproductive health complaints and those associated with exposure to potentially teratogenic radiation, 44.5% (95% CI 41.3%, 47.8%) and 36.7% (95% CI 32.5%, 40.9%), respectively, included pregnancy testing. Among the entire study population, we found statistically significant differences in pregnancy by testing (p<0.001 for all) by age, race/ethnicity, hospital admission, and geographic region.
Conclusions
A minority of female adolescent ED visits included pregnancy testing even if patients presented with potential reproductive health complaints or received exposure to ionizing radiation. Small but statistically significant differences in pregnancy testing rates were noted based on age, race/ethnicity, ED disposition, and geographic region. Future studies should focus on designing quality improvement interventions to increase pregnancy testing in adolescent ED patients, especially among those in whom pregnancy complications or the risk of potentially teratogenic radiation exposure is higher.