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Validation of algorithms to ascertain clinical conditions and medical procedures used during pregnancy
Author(s) -
Andrade Susan E.,
Moore Simas Tiffany A.,
Boudreau Denise,
Raebel Marsha A.,
Toh Sengwee,
Syat Beth,
Dashevsky Inna,
Platt Richard
Publication year - 2011
Publication title -
pharmacoepidemiology and drug safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.023
H-Index - 96
eISSN - 1099-1557
pISSN - 1053-8569
DOI - 10.1002/pds.2217
Subject(s) - medicine , gestational diabetes , obesity , body mass index , medical record , medical diagnosis , diagnosis code , diabetes mellitus , pregnancy , obstetrics , pharmacoepidemiology , gestational age , algorithm , gestation , environmental health , endocrinology , population , medical prescription , genetics , pathology , computer science , pharmacology , biology
Purpose To evaluate the validity of health plan administrative and claims data to identify pre‐gestational and gestational diabetes, obesity, and ultrasounds among pregnant women. Methods A retrospective study was conducted using the administrative and claims data of three health plans participating in the HMO Research Network. Diagnoses, drug dispensings, and procedure codes were used to identify diabetes, obesity, and ultrasounds among women who were pregnant between January 2006 and December 2008. A random sample of medical charts ( n = 222) were abstracted. Positive predictive values (PPVs) were calculated. Sensitivity also was calculated for obesity among women for whom body mass index data were available in electronic medical records at two sites. Results Overall, 190 of 222 cases of diabetes (86%) were confirmed (82% for gestational diabetes and 74% for pre‐gestational diabetes). The PPV for codes to identify ultrasounds was 80%. Whereas the PPV for obesity‐related diagnosis codes was high (93%), and the sensitivity was low (33%). Conclusions Health plan administrative and claims data can be used to accurately identify pre‐gestational and gestational diabetes and ultrasounds. Obesity is not consistently coded. Copyright © 2011 John Wiley & Sons, Ltd.