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OBJECTIVE: The purpose of this study is to validate the 4P's Plus screen for substance use in pregnancy. STUDY DESIGN: A total of 228 pregnant women enrolled in prenatal care underwent screening with the 4P's Plus and received a follow-up clinical assessment for substance use. Statistical analyses regarding reliability, sensitivity, specificity, and positive and negative predictive validity of the 4Ps Plus were conducted. RESULT: The overall reliability for the five-item measure was 0.62. Seventy-four (32.5%) of the women had a positive screen. Sensitivity and specificity were very good, at 87 and 76%, respectively. Positive predictive validity was low (36%), but negative predictive validity was quite high (97%). Of the 31 women who had a positive clinical assessment, 45% were using less than 1 day per week. CONCLUSION: The 4P's Plus reliably and effectively screens pregnant women for risk of substance use, including those women typically missed by other perinatal screening methodologies. [ABSTRACT FROM AUTHOR]

OBJECTIVE: Determine the prevalence of substance use among pregnant women in five diverse communities utilizing the 4P's Plus screen for alcohol, tobacco, and other drug use. STUDY DESIGN: Pregnant women enrolled in prenatal care clinics in five communities were screened for substance use with the 4P's Plus. Those women with a positive screen underwent an assessment for substance use through a follow-up structured clinical interview conducted at the same prenatal visit. RESULTS: Among 7818 women in five communities, 2555 (32.7%) had a positive screen for substance use in pregnancy. Four of the communities conducted a follow-up assessment on all women with a positive screen (n = 1548). Among these women, 717 (15% of the total population) had continued use after learning of the pregnancy. Overall, 21% of the pregnant women used alcohol prior to recognition of the pregnancy, and 11% continued use after knowledge of the pregnancy. Among the 512 women who continued to use alcohol, 2% were drinking daily, 7% were drinking 3 to 6 days per week, 27% were drinking 1 to 2 days per week, and 63% were drinking less than 1 day per week. The rates of marijuana use and other illicit drug use among the women were 7 and 2%, respectively, prior to knowledge of pregnancy and dropped to 3 and 1% after learning of the pregnancy. CONCLUSION: The 4P's Plus identifies not only those pregnant women whose drinking or drug use is at a high enough level to impair daily functioning, but provides an opportunity for early intervention for the much larger group of women whose pregnancies are at risk from relatively small amounts of substance use. [ABSTRACT FROM AUTHOR]