Miscarriage
The study defined miscarriage as spontaneous abortion before the end of the 20th week of pregnancy using ICD-10 code O03. The main analysis excluded miscarriages before the sixth week because very early losses may be mistaken for late mens…
1 sources - 5 claims
The study defined miscarriage as spontaneous abortion before the end of the 20th week of pregnancy using ICD-10 code O03. The main analysis excluded miscarriages before the sixth week because very early losses may be mistaken for late menstruation. Including miscarriages before the sixth week did not materially change the estimated association. Miscarriages may have been under-ascertained, especially very early miscarriages.