Ishikawa, 2024
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nested case control
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Exposure were identified according to the WHO-ATC or alternate entries in the administrative claims database from JMDC Inc. (Tokyo, Japan), which contains pharmacy claims received from the insurers.
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Birth outcomes was unavailable in the Japanese claims database. Pregnancies and birth outcomes were estimated using two methods: the first one was for those whose pregnancy-and birth outcome-related entries were available, and their pregnancies and birth outcomes were estimated using these entries.
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Exclusion of women with recurrent pregnancy loss, antiphospholipid syndrome, medications at risk of miscarriage. No adjustment for this exposure.
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