Background: Although marriage is associated with favourable reproductive outcomes among adult women, it is not known whether the marriage advantage applies to girls (< 18>

Methods: National singleton birth registrations were used to estimate the prevalence of girl child , N = 23,117,661), Ecuador (2014-2018, N = 1,519,168), the USA (2014-2018, N = 18,618,283) and Canada (2008-2018, N = 3,907,610). The joint associations between marital status and maternal age groups (< 18,>

Numbers

Shot alternatives procedure into the Brazil, Ecuador, Us, and you may Canada. * To fulfill Analytics Canada’s confidentiality requirements, every wavelengths have been circular towards the nearby several of five playing with a managed arbitrary rounding approach. † Exceptions maybe not collectively personal

Shipments away from births centered on age bracket † and you may married condition inside age range ‡ when you look at the Brazil, Ecuador, United states of america and you may Canada. † Percents during the panel Good was column percents. ‡ Percents from inside the panel B was line percents

Dispute of interest statement

Minimally (A) and country-specific fully (B) adjusted odds ratios of preterm birth by maternal age group and marital status in Brazil, Ecuador, USA, and Canada. † Adjusted for infant sex, previous birth, and year of birth. ‡ Brazil: Adjusted for infant sex, previous birth, year of birth, paternal age, maternal race, prenatal care initiated in 1 st trimester, state, and age-appropriate low education. Ecuador: Adjusted for infant sex, previous birth, year of birth, maternal ethnicity, foreign-born mother, adequacy of the number of prenatal care visits for gestational age (WHO), maternal literacy, and maternal region of residence and rurality. USA: Adjusted for infant sex, previous birth, year of birth, paternal age, maternal race/ethnicity, foreign-born mother, any maternal smoking during pregnancy, prenatal care adequacy (GINDEX), received WIC during pregnancy, and delivery primarily paid by Medicaid. Canada: Adjusted for infant sex, previous birth, year of birth, paternal age, foreign-born mother, foreign-born father, province/territory of birth, reside in rural or urban area, and area-level income quintiles. ***p < 0.0001,> Fig. 4

Minimally (A) and country-specific fully (B) adjusted odds ratios of small for gestational age by maternal age group and marital status in Brazil, Ecuador, USA, and Canada. † Adjusted for previous birth and year of birth. ‡ Brazil: Adjusted for previous birth, year of birth, paternal age, maternal race, prenatal care initiated in 1 st trimester, state, and age-appropriate low education. Ecuador: Adjusted for previous birth, year of birth, maternal ethnicity, foreign-born mother, adequacy of the number of prenatal care visits for gestational age (WHO), maternal literacy, and maternal region of residence and rurality. USA: Adjusted for previous birth, year of birth, paternal age, maternal race/ethnicity, foreign-born mother, any maternal smoking during pregnancy, prenatal care adequacy (GINDEX), received WIC during pregnancy https://kissbrides.com/tr/sicak-alman-kadinlar/, and delivery primarily paid by Medicaid. Canada: Adjusted for previous birth, year of birth, paternal age, foreign-born mother, foreign-born father, province/territory of birth, reside in rural or urban area, and area-level income quintiles. ***p < 0.0001,> Fig. 5

Minimally (A) and country-specific fully (B) adjusted odds ratios of repeat birth for married mothers versus unmarried mothers within maternal age group in Brazil, Ecuador, USA, and Canada. † Adjusted for year of birth. ‡ Brazil: Adjusted for year of birth, paternal age, maternal race, state, and age-appropriate low education. Ecuador: Adjusted for year of birth, maternal ethnicity, foreign-born mother, maternal literacy, and maternal region of residence and rurality. USA: Adjusted for year of birth, paternal age, maternal race/ethnicity, foreign-born mother, received WIC during pregnancy, and delivery primarily paid by Medicaid. Canada: Adjusted for year of birth, paternal age, foreign-born mother, foreign-born father, province/territory of birth, reside in rural or urban area, and area-level income quintiles. ***p < 0.0001,>