Department of Nutritional Sciences, University of Toronto, Toronto, Ontario, Canada; Manitoba Centre for Health Policy, Community Health Sciences, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
Faculty of Law, University of Manitoba, Winnipeg, Manitoba, Canada.
Prev Med. 2022 Nov;164:107315. doi: 10.1016/j.ypmed.2022.107315. Epub 2022 Oct 21.
Immigrants to Canada increasingly come from regions where child marriage (<18 years) is prevalent. We described the prevalence, demographic characteristics, and reproductive health correlates of marriage among births to Canadian-born and foreign-born adolescent mothers. Using Canadian birth registrations from 1990 to 2018, marriage prevalence, parental birth region, and parental age gap were examined by maternal birthplace (Canada and 12 world regions) among births to mothers <18 years. Adjusted odds ratios (AORs) of preterm birth (PTB), small for gestational age (SGA), and repeat birth were estimated for the joint associations of adolescent maternal age group (<18-year, 18-19-year, and 20-24-year), marriage, and nativity status (n = 1,904,200). Depending on maternal birthplace, marital births represented 2.6% to 81.8% of births to mothers <18 years. Marriage among mothers giving birth at <18 years was associated with higher proportions of parents from the same birthplace and larger parental age gaps. AORs of PTB tended to increase with lower maternal age. AORs of SGA were generally higher among births to foreign-born mothers. Marriage was associated with lower AORs of PTB and SGA among births to Canadian-born mothers and PTB among births to foreign-born mothers in the older adolescent age groups, but no association existed in the <18-year group. Marriage was positively associated with repeat birth in all adolescent age groups, with stronger associations in the <18-year group. The reproductive health correlates of marriage are similar between births to Canadian-born and foreign-born mothers <18 years but some differ between births to mothers <18 years and those to older adolescent mothers.
移民到加拿大的人越来越多地来自儿童婚姻（<18 岁）普遍存在的地区。我们描述了加拿大出生和外国出生的未成年母亲所生孩子的婚姻流行率、人口特征和生殖健康相关性。使用 1990 年至 2018 年的加拿大出生登记数据，按母亲出生地（加拿大和 12 个世界区域）检查了未成年母亲（<18 岁）所生孩子的婚姻流行率、父母出生地和父母年龄差距。对于未成年母亲年龄组（<18 岁、18-19 岁和 20-24 岁）、婚姻和出生地状况（n=1,904,200）的联合关联，估计了早产（PTB）、小于胎龄儿（SGA）和重复分娩的调整比值比（AOR）。根据母亲的出生地，婚姻分娩占<18 岁母亲分娩的 2.6%至 81.8%。<18 岁母亲分娩时的婚姻与来自同一出生地的父母比例较高和父母年龄差距较大有关。PTB 的 AOR 随着母亲年龄的降低而增加。SGA 的 AOR 通常在外国出生的母亲所生孩子中较高。在加拿大出生的母亲所生孩子中，婚姻与 PTB 和 SGA 的 AOR 降低有关，而在外国出生的母亲所生孩子中，PTB 与 AOR 降低有关，但在<18 岁组中则没有关联。在所有未成年年龄组中，婚姻与重复分娩呈正相关，<18 岁组的相关性更强。在<18 岁的加拿大出生和外国出生的母亲所生孩子中，婚姻的生殖健康相关性相似，但<18 岁的母亲所生孩子和年龄较大的未成年母亲所生孩子之间存在一些差异。
