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Teenage pregnancy: the impact of maternal adolescent childbearing and older sister's teenage pregnancy on a younger sister.
BMC Pregnancy Childbirth 2016; 16(1):120BP

Abstract

BACKGROUND

Risk factors for teenage pregnancy are linked to many factors, including a family history of teenage pregnancy. This research examines whether a mother's teenage childbearing or an older sister's teenage pregnancy more strongly predicts teenage pregnancy.

METHODS

This study used linkable administrative databases housed at the Manitoba Centre for Health Policy (MCHP). The original cohort consisted of 17,115 women born in Manitoba between April 1, 1979 and March 31, 1994, who stayed in the province until at least their 20(th) birthday, had at least one older sister, and had no missing values on key variables. Propensity score matching (1:2) was used to create balanced cohorts for two conditional logistic regression models; one examining the impact of an older sister's teenage pregnancy and the other analyzing the effect of the mother's teenage childbearing.

RESULTS

The adjusted odds of becoming pregnant between ages 14 and 19 for teens with at least one older sister having a teenage pregnancy were 3.38 (99 % CI 2.77-4.13) times higher than for women whose older sister(s) did not have a teenage pregnancy. Teenage daughters of mothers who had their first child before age 20 had 1.57 (99 % CI 1.30-1.89) times higher odds of pregnancy than those whose mothers had their first child after age 19. Educational achievement was adjusted for in a sub-population examining the odds of pregnancy between ages 16 and 19. After this adjustment, the odds of teenage pregnancy for teens with at least one older sister who had a teenage pregnancy were reduced to 2.48 (99 % CI 2.01-3.06) and the odds of pregnancy for teen daughters of teenage mothers were reduced to 1.39 (99 % CI 1.15-1.68).

CONCLUSION

Although both were significant, the relationship between an older sister's teenage pregnancy and a younger sister's teenage pregnancy is much stronger than that between a mother's teenage childbearing and a younger daughter's teenage pregnancy. This study contributes to understanding of the broader topic "who is influential about what" within the family.

Authors+Show Affiliations

Manitoba Centre for Health Policy, Department of Community Health Sciences, Faculty of Health Sciences, College of Medicine, University of Manitoba, 408-727 McDermot Avenue, Winnipeg, Manitoba, R3E 3P5, Canada. wallwiee@myumanitoba.ca.Manitoba Centre for Health Policy, Department of Community Health Sciences, Faculty of Health Sciences, College of Medicine, University of Manitoba, 408-727 McDermot Avenue, Winnipeg, Manitoba, R3E 3P5, Canada.Manitoba Centre for Health Policy, Department of Community Health Sciences, Faculty of Health Sciences, College of Medicine, University of Manitoba, 408-727 McDermot Avenue, Winnipeg, Manitoba, R3E 3P5, Canada.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

27225972

Citation

Wall-Wieler, Elizabeth, et al. "Teenage Pregnancy: the Impact of Maternal Adolescent Childbearing and Older Sister's Teenage Pregnancy On a Younger Sister." BMC Pregnancy and Childbirth, vol. 16, no. 1, 2016, p. 120.
Wall-Wieler E, Roos LL, Nickel NC. Teenage pregnancy: the impact of maternal adolescent childbearing and older sister's teenage pregnancy on a younger sister. BMC Pregnancy Childbirth. 2016;16(1):120.
Wall-Wieler, E., Roos, L. L., & Nickel, N. C. (2016). Teenage pregnancy: the impact of maternal adolescent childbearing and older sister's teenage pregnancy on a younger sister. BMC Pregnancy and Childbirth, 16(1), p. 120. doi:10.1186/s12884-016-0911-2.
Wall-Wieler E, Roos LL, Nickel NC. Teenage Pregnancy: the Impact of Maternal Adolescent Childbearing and Older Sister's Teenage Pregnancy On a Younger Sister. BMC Pregnancy Childbirth. 2016 05 25;16(1):120. PubMed PMID: 27225972.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Teenage pregnancy: the impact of maternal adolescent childbearing and older sister's teenage pregnancy on a younger sister. AU - Wall-Wieler,Elizabeth, AU - Roos,Leslie L, AU - Nickel,Nathan C, Y1 - 2016/05/25/ PY - 2016/01/20/received PY - 2016/05/14/accepted PY - 2016/5/27/entrez PY - 2016/5/27/pubmed PY - 2017/11/8/medline KW - Familial influence KW - Intergenerational effects KW - Linkable administrative data KW - Social modelling KW - Teenage pregnancy SP - 120 EP - 120 JF - BMC pregnancy and childbirth JO - BMC Pregnancy Childbirth VL - 16 IS - 1 N2 - BACKGROUND: Risk factors for teenage pregnancy are linked to many factors, including a family history of teenage pregnancy. This research examines whether a mother's teenage childbearing or an older sister's teenage pregnancy more strongly predicts teenage pregnancy. METHODS: This study used linkable administrative databases housed at the Manitoba Centre for Health Policy (MCHP). The original cohort consisted of 17,115 women born in Manitoba between April 1, 1979 and March 31, 1994, who stayed in the province until at least their 20(th) birthday, had at least one older sister, and had no missing values on key variables. Propensity score matching (1:2) was used to create balanced cohorts for two conditional logistic regression models; one examining the impact of an older sister's teenage pregnancy and the other analyzing the effect of the mother's teenage childbearing. RESULTS: The adjusted odds of becoming pregnant between ages 14 and 19 for teens with at least one older sister having a teenage pregnancy were 3.38 (99 % CI 2.77-4.13) times higher than for women whose older sister(s) did not have a teenage pregnancy. Teenage daughters of mothers who had their first child before age 20 had 1.57 (99 % CI 1.30-1.89) times higher odds of pregnancy than those whose mothers had their first child after age 19. Educational achievement was adjusted for in a sub-population examining the odds of pregnancy between ages 16 and 19. After this adjustment, the odds of teenage pregnancy for teens with at least one older sister who had a teenage pregnancy were reduced to 2.48 (99 % CI 2.01-3.06) and the odds of pregnancy for teen daughters of teenage mothers were reduced to 1.39 (99 % CI 1.15-1.68). CONCLUSION: Although both were significant, the relationship between an older sister's teenage pregnancy and a younger sister's teenage pregnancy is much stronger than that between a mother's teenage childbearing and a younger daughter's teenage pregnancy. This study contributes to understanding of the broader topic "who is influential about what" within the family. SN - 1471-2393 UR - https://www.unboundmedicine.com/medline/citation/27225972/Teenage_pregnancy:_the_impact_of_maternal_adolescent_childbearing_and_older_sister's_teenage_pregnancy_on_a_younger_sister_ L2 - https://bmcpregnancychildbirth.biomedcentral.com/articles/10.1186/s12884-016-0911-2 DB - PRIME DP - Unbound Medicine ER -