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.
The Manitoba teen pregnancy rates in 2010 were slightly lower than rates in England and Wales (54.), and the United States (57.) [16, 17].
The Manitoba Population Health Research Data Repository contains province-wide, routinely collected individual data over time (going back to 1970 in some files), across space (with residential location documented using six digit postal codes), for each family (with changes in family structure recorded every 6 months) and for each resident.
By controlling for a variety of social and biological factors (such as neighborhood socioeconomic status, marital status of mother, residential mobility, family structure changes, and mental health), and the use of a strong statistical design—propensity score matching with a large population-based dataset—this study aims to determine whether teenage pregnancy is more strongly predicted by having an older sister who had a teenage pregnancy or by having a mother who bore her first child before age 20.
The setting of this study, Manitoba, is generally representative of Canada as a whole, ranking in the middle for several health and education indicators [12, 13].
This study contributes to understanding of the broader topic “who is influential about what” within the family.
The risks and realities associated with teenage motherhood are well documented, with consequences starting at childbirth and following both mother and child over the life span.
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 birthday, had at least one older sister, and had no missing values on key variables.