Table 1 Classification of variables
Variable | Description | Source |
|---|---|---|
Dependent | ||
Type of Obstetric Death | A dichotomous variable that classifies the occurrence of obstetric death into two different categories: "Direct" indicates the presence of direct obstetric death, while "Indirect" indicates indirect obstetric death | MIS |
Death During Pregnancy | Dichotomous variable classifying whether or not the death occurred during pregnancy. A response of "Yes" indicates that the death occurred during pregnancy; a response of "No" indicates that the death occurred outside of pregnancy | MIS |
Death in Puerperium | Dichotomous variable classifying whether or not death occurred in the postpartum period. A response of "Yes" indicates that the death occurred in the immediate postpartum period, which includes up to 42 days after birth. A response of "No" indicates that the death occurred outside this period | MIS |
Specific Mortality Risk | Quantitative measures adjusted for year, certain sociodemographic characteristics, including age group, race/ethnicity, education, marital status, and method of death investigation. This adjustment allows for a more refined analysis that accounts for differences in the demographic composition of the study population | MIS and LBIS |
Independent | ||
Year | Each year from 2011 to 2021, obstetric deaths and specific mortality risk are adjusted | MIS and LBIS |
Place of residence | Obstetric deaths and specific mortality risk are adjusted for place of residence (federal unit, state, and city of the reproductive-age woman) | MIS and LBIS |
Age Group | Age group of women of childbearing age according to the Brazilian classification, 10 to 14 years, 15 to 19 years, 20 to 29 years, 30 to 39 years, and 40 to 49 years | MIS |
Race/Ethnicity | Refers to the classification of the population according to characteristics related to ethnic and racial origin. The categories used in Brazil are: white, black, brown, yellow, and indigenous | MIS |
Schooling | It refers to the level of formal education an individual has attained. Categories include: no education, 1 to 3 years of study, 4 to 7 years, 8 to 11 years, and 12 or more years of study | MIS |
Marital Status | Refers to the legal or social status of women of childbearing age in terms of marital relationships. Categorized as single, married, divorced, widow, and stable union | MIS |
Source of Death Investigation | Refers to the source of information used to investigate the circumstances and causes of death. The categories included are: Home Visit (Family), Medical Records Forensic, Medical Institute, and Death Verification Service | MIS |
Proportion of cesarean births | Refers to the percentage or share of total births that are by cesarean section (C-section) rather than vaginal delivery | LBIS |
Proporcion of live births to mothers who had 3 or fewer antenatal visits | Is a health indicator that assesses the percentage of live births where the mothers had a relatively low number of antenatal (prenatal) visits during pregnancy | LBIS |
Number of live births to adolescent mothers (Age group 10 to 19 years) | The average number of live births borne by a woman, by a specific age group of the reproductive period, in the total population residing in a given geographical area, in the year under consideration | LBIS |