Table 2
Associations between maternal birthplace and preterm birth by infant’s province of birth, 2000 to 2016 (N = 5,831,580)
Mother’s birthplace | Infant’s province of birth | |||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Canada | British Columbia | Alberta | Saskatchewan | Manitoba | Ontario | Quebec | Atlantic Canada | |||||||||||||||||
PTB % | 95% LCI | 95% UCI | PTB % | 95% LCI | 95% UCI | PTB % | 95% LCI | 95% UCI | PTB % | 95% LCI | 95% UCI | PTB % | 95% LCI | 95% UCI | PTB % | 95% LCI | 95% UCI | PTB % | 95% LCI | 95% UCI | PTB % | 95% LCI | 95% UCI | |
CanadaTable 2 Note † | 6.16 | 6.13 | 6.18 | 5.90 | 5.83 | 5.97 | 6.81 | 6.75 | 6.88 | 5.99 | 5.89 | 6.09 | 6.99 | 6.88 | 7.10 | 6.01 | 5.97 | 6.04 | 5.96 | 5.91 | 6.00 | 6.22 | 6.14 | 6.30 |
ARR | 95% LCI | 95% UCI | ARR | 95% LCI | 95% UCI | ARR | 95% LCI | 95% UCI | ARR | 95% LCI | 95% UCI | ARR | 95% LCI | 95% UCI | ARR | 95% LCI | 95% UCI | ARR | 95% LCI | 95% UCI | ARR | 95% LCI | 95% UCI | |
China | 0.73Note * | 0.71 | 0.75 | 0.80Note * | 0.76 | 0.84 | 0.78Note * | 0.72 | 0.84 | 0.69Note * | 0.55 | 0.87 | 0.64Note * | 0.53 | 0.78 | 0.71Note * | 0.68 | 0.73 | 0.72Note * | 0.66 | 0.79 | 0.88 | 0.71 | 1.09 |
Rest of Eastern Asia | 0.80Note * | 0.77 | 0.83 | 0.79Note * | 0.75 | 0.84 | 0.83Note * | 0.75 | 0.92 | 0.90 | 0.63 | 1.29 | 0.71Note * | 0.52 | 0.96 | 0.83Note * | 0.78 | 0.87 | 0.88 | 0.74 | 1.06 | 0.63Note * | 0.42 | 0.96 |
India | 1.03Note * | 1.01 | 1.05 | 1.00 | 0.95 | 1.04 | 1.14Note * | 1.09 | 1.20 | 0.91 | 0.74 | 1.11 | 1.00 | 0.89 | 1.12 | 1.03 | 1.00 | 1.06 | 1.24Note * | 1.11 | 1.40 | 1.14 | 0.86 | 1.51 |
Pakistan | 1.02 | 0.99 | 1.05 | 0.88 | 0.75 | 1.02 | 1.13Note * | 1.05 | 1.22 | 1.12 | 0.93 | 1.35 | 0.94 | 0.72 | 1.23 | 1.00 | 0.96 | 1.04 | 1.21Note * | 1.08 | 1.36 | 0.77 | 0.48 | 1.23 |
Bangladesh | 1.32Note * | 1.25 | 1.40 | 1.82Note * | 1.42 | 2.32 | 1.67Note * | 1.40 | 2.00 | 1.09 | 0.76 | 1.58 | 0.96 | 0.57 | 1.63 | 1.25Note * | 1.16 | 1.35 | 1.47Note * | 1.29 | 1.68 | 1.10 | 0.63 | 1.94 |
Rest of Southern Asia | 0.96Note * | 0.93 | 0.99 | 0.89Note * | 0.81 | 0.99 | 0.89 | 0.80 | 1.00 | 1.23 | 0.86 | 1.76 | 0.80 | 0.60 | 1.07 | 0.99 | 0.96 | 1.03 | 1.07 | 0.97 | 1.17 | 0.64 | 0.40 | 1.01 |
Philippines | 1.45Note * | 1.42 | 1.48 | 1.40Note * | 1.33 | 1.47 | 1.51Note * | 1.45 | 1.57 | 1.41Note * | 1.26 | 1.57 | 1.32Note * | 1.23 | 1.42 | 1.42Note * | 1.37 | 1.47 | 1.36Note * | 1.23 | 1.49 | 1.40Note * | 1.13 | 1.74 |
Viet Nam | 1.06Note * | 1.02 | 1.10 | 1.11Note * | 1.02 | 1.21 | 1.14Note * | 1.05 | 1.24 | 0.83 | 0.58 | 1.19 | 1.00 | 0.79 | 1.25 | 1.01 | 0.96 | 1.06 | 1.10 | 0.98 | 1.24 | 1.51 | 0.95 | 2.39 |
Rest of Southeastern Asia | 1.15Note * | 1.09 | 1.21 | 1.06 | 0.94 | 1.18 | 1.30Note * | 1.16 | 1.46 | 1.45Note * | 1.04 | 2.02 | 0.94 | 0.71 | 1.24 | 1.12Note * | 1.04 | 1.21 | 1.23Note * | 1.07 | 1.42 | 1.24 | 0.78 | 1.98 |
Western and Central Asia | 0.79Note * | 0.77 | 0.81 | 0.81Note * | 0.72 | 0.91 | 0.84Note * | 0.77 | 0.90 | 0.92 | 0.70 | 1.19 | 0.57Note * | 0.47 | 0.69 | 0.80Note * | 0.77 | 0.84 | 0.76Note * | 0.71 | 0.82 | 0.87 | 0.73 | 1.03 |
Northern Africa | 0.69Note * | 0.67 | 0.72 | 0.79Note * | 0.63 | 0.98 | 0.82Note * | 0.74 | 0.91 | 0.83 | 0.59 | 1.16 | 0.70Note * | 0.53 | 0.92 | 0.71Note * | 0.66 | 0.77 | 0.70Note * | 0.67 | 0.73 | 0.76 | 0.56 | 1.03 |
Sub-Saharan Africa | 0.98 | 0.95 | 1.00 | 0.93 | 0.84 | 1.03 | 0.95 | 0.90 | 1.01 | 0.87 | 0.72 | 1.05 | 0.94 | 0.83 | 1.06 | 0.99 | 0.95 | 1.02 | 1.00 | 0.95 | 1.07 | 1.05 | 0.85 | 1.31 |
Caribbean | 1.39Note * | 1.35 | 1.42 | 1.12 | 0.91 | 1.37 | 1.42Note * | 1.25 | 1.61 | 0.98 | 0.56 | 1.71 | 1.26 | 0.95 | 1.66 | 1.42Note * | 1.37 | 1.46 | 1.48Note * | 1.41 | 1.55 | 1.04 | 0.70 | 1.55 |
Central America | 0.93Note * | 0.90 | 0.96 | 1.01 | 0.91 | 1.12 | 0.93 | 0.87 | 1.00 | 1.13 | 0.85 | 1.49 | 0.71Note * | 0.62 | 0.81 | 0.88Note * | 0.84 | 0.93 | 1.13Note * | 1.04 | 1.23 | 0.70 | 0.47 | 1.04 |
South America | 1.03 | 1.00 | 1.06 | 0.87Note * | 0.77 | 0.99 | 0.94 | 0.85 | 1.03 | 0.81 | 0.56 | 1.18 | 0.69Note * | 0.58 | 0.82 | 1.15Note * | 1.11 | 1.20 | 0.92Note * | 0.85 | 0.99 | 0.98 | 0.69 | 1.39 |
United States | 0.82Note * | 0.80 | 0.85 | 0.80Note * | 0.74 | 0.87 | 0.79Note * | 0.73 | 0.87 | 0.78Note * | 0.63 | 0.97 | 0.74Note * | 0.62 | 0.88 | 0.86Note * | 0.81 | 0.91 | 0.84Note * | 0.75 | 0.94 | 0.83Note * | 0.72 | 0.96 |
Eastern Europe | 0.81Note * | 0.79 | 0.84 | 0.72Note * | 0.66 | 0.79 | 0.85Note * | 0.78 | 0.93 | 0.88 | 0.70 | 1.12 | 0.67Note * | 0.58 | 0.78 | 0.83Note * | 0.80 | 0.87 | 0.87Note * | 0.80 | 0.93 | 0.95 | 0.71 | 1.26 |
United Kingdom | 0.91Note * | 0.88 | 0.95 | 0.88Note * | 0.81 | 0.96 | 0.93 | 0.84 | 1.02 | 0.63Note * | 0.44 | 0.92 | 0.59Note * | 0.45 | 0.78 | 0.97 | 0.92 | 1.03 | 0.69Note * | 0.54 | 0.88 | 0.81 | 0.64 | 1.02 |
Rest of Western Europe | 0.78Note * | 0.75 | 0.80 | 0.77Note * | 0.71 | 0.84 | 0.83Note * | 0.77 | 0.90 | 0.76Note * | 0.58 | 0.98 | 0.74Note * | 0.64 | 0.87 | 0.81Note * | 0.78 | 0.85 | 0.70Note * | 0.66 | 0.75 | 0.89 | 0.74 | 1.06 |
Rest of the worldTable 2 Note ‡ | 1.18Note * | 1.11 | 1.25 | 1.31Note * | 1.19 | 1.43 | 1.18Note * | 1.03 | 1.34 | 0.94 | 0.54 | 1.65 | 0.50 | 0.24 | 1.07 | 1.03 | 0.90 | 1.18 | 0.96 | 0.72 | 1.28 | 1.66Note * | 1.18 | 2.35 |
ARR = adjusted relative risk LCI = lower confidence interval UCI = upper confidence interval Notes: Adjusted for infant's birth year, infant's sex and mother's age (11 to 19 years, 20 to 24 years, 25 to 29 years, 30 to 34 years, 35 to 39 years and 40 to 49 years). Source: Statistics Canada, Vital Statistics–Birth Database, 2000 to 2016. |
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