Ethnic differences in patient requests for pregnancy testing.

This study identifies a black-white difference in pregnancy test requests and in factors predicting such requests among 324 women tested at an academic family practice in 1986. Data were obtained from encounter sheets filled out by clinicians at the time tests were ordered. Analysis of variance revealed that blacks requested fewer pregnancy tests than whites, and that this finding remained significant (P less than .01) after controlling for the effects of gestational status and other clinical and sociodemographic factors. Blacks were less likely to be married or possess health insurance, but more likely to have been pregnant before. Logistic regressions indicated that factors predicting test requests differed by ethnicity, with symptoms and age predicting test requests among whites, and pregnancy the only significant predictor among blacks. Explanations consistent with these findings include possible ethnic differences in reactions to symptoms and economic factors. Further refinement of these hypotheses and consideration of other alternatives will advance understanding of ethnicity as a factor in test-requesting behavior, and enable clinicians to communicate with and care for black women more effectively.