APNCU Index (Kotelchuck, 1994)
Inadequate After month 4 or less than 50% of recommended visits*
Intermediate Before month 5 and 50 - 79% of recommended visits
Adequate Before month 5 and 80 - 109% of recommended visits
Adequate Plus Before month 5 and 110% of recommended visits
* Based upon ACOG guidelines of 13 visits for a 40 week gestation.