Outcome | Definition or method of calculation |
---|---|
Late initiation of prenatal care | The woman’s prenatal care began after the first trimester (date of conception to 91 d) |
No care | The woman received no prenatal care in the first, second or third trimester |
Care initiated in first trimester | The woman’s first prenatal visit was in the first trimester (date of conception to 91 d) |
Care initiated in second trimester | The woman’s first prenatal visit was in the second trimester (92–189 d) |
Care initiated in third trimester | The woman’s first prenatal visit was in the third trimester (190 d to date of birth) |
Low number of prenatal visits | The woman had fewer than 5 prenatal visits before delivery |
Inadequate or no prenatal care | The proportion of women with no or inadequate prenatal care was determined using the R-GINDEX. |
Quality of prenatal care by the R-GINDEX | The R-GINDEX is a measure of the adequacy of prenatal care by a health care provider that identifies 6 major categories of prenatal care: inadequate prenatal care, intermediate prenatal care, adequate prenatal care, intensive care, no care and missing information. (10) Knowledge of 3 birth-related outcomes is required to calculate the R-GINDEX:
|
Inadequate PNC | The proportion of women with inadequate prenatal care was determined using the R-GINDEX. |
Intermediate PNC | The proportion of women with intermediate prenatal care was determined using the R-GINDEX. |
Adequate PNC | The proportion of women with adequate prenatal care was determined using the R-GINDEX. |
Intensive PNC | The proportion of women with intensive prenatal care was determined using the R-GINDEX. Women whose number of visits was approximately 1 standard deviation above the mean number of visits for other women whose prenatal care was initiated in the same trimester and whose baby was the same gestational age at delivery were labelled as intensive care users. (10) “These women had an unexpectedly large number of PNC visits, which may indicate potential morbidity or complications.” (10) |
No care | The proportion of women with no prenatal care in any trimester was determined using the R-GINDEX. |
Note: FASD = fetal alcohol spectrum disorder, R-GINDEX = Revised Graduated Prenatal Care Utilization Index.