| 1 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y |
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| 2 | associations between maternal birthplace and preterm birth by infant's province of birth, 2000 to 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 3 | mother's birthplace | infant's province of birth |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 4 |  | canada |  |  | british columbia |  |  | alberta |  |  | saskatchewan |  |  | manitoba |  |  | ontario |  |  | quebec |  |  | atlantic canada |  |  |
| 5 |  | 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 |
| 6 | canada | 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 |
| 7 |  | 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 |
| 8 | china | 0.73 | 0.71 | 0.75 | 0.80 | 0.76 | 0.84 | 0.78 | 0.72 | 0.84 | 0.69 | 0.55 | 0.87 | 0.64 | 0.53 | 0.78 | 0.71 | 0.68 | 0.73 | 0.72 | 0.66 | 0.79 | 0.88 | 0.71 | 1.09 |
| 9 | rest of eastern asia | 0.80 | 0.77 | 0.83 | 0.79 | 0.75 | 0.84 | 0.83 | 0.75 | 0.92 | 0.90 | 0.63 | 1.29 | 0.71 | 0.52 | 0.96 | 0.83 | 0.78 | 0.87 | 0.88 | 0.74 | 1.06 | 0.63 | 0.42 | 0.96 |
| 10 | india | 1.03 | 1.01 | 1.05 | 1.00 | 0.95 | 1.04 | 1.14 | 1.09 | 1.20 | 0.91 | 0.74 | 1.11 | 1.00 | 0.89 | 1.12 | 1.03 | 1.00 | 1.06 | 1.24 | 1.11 | 1.40 | 1.14 | 0.86 | 1.51 |
| 11 | pakistan | 1.02 | 0.99 | 1.05 | 0.88 | 0.75 | 1.02 | 1.13 | 1.05 | 1.22 | 1.12 | 0.93 | 1.35 | 0.94 | 0.72 | 1.23 | 1.00 | 0.96 | 1.04 | 1.21 | 1.08 | 1.36 | 0.77 | 0.48 | 1.23 |
| 12 | bangladesh | 1.32 | 1.25 | 1.40 | 1.82 | 1.42 | 2.32 | 1.67 | 1.40 | 2.00 | 1.09 | 0.76 | 1.58 | 0.96 | 0.57 | 1.63 | 1.25 | 1.16 | 1.35 | 1.47 | 1.29 | 1.68 | 1.10 | 0.63 | 1.94 |
| 13 | rest of southern asia | 0.96 | 0.93 | 0.99 | 0.89 | 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 |
| 14 | philippines | 1.45 | 1.42 | 1.48 | 1.40 | 1.33 | 1.47 | 1.51 | 1.45 | 1.57 | 1.41 | 1.26 | 1.57 | 1.32 | 1.23 | 1.42 | 1.42 | 1.37 | 1.47 | 1.36 | 1.23 | 1.49 | 1.40 | 1.13 | 1.74 |
| 15 | viet nam | 1.06 | 1.02 | 1.10 | 1.11 | 1.02 | 1.21 | 1.14 | 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 |
| 16 | rest of southeastern asia | 1.15 | 1.09 | 1.21 | 1.06 | 0.94 | 1.18 | 1.30 | 1.16 | 1.46 | 1.45 | 1.04 | 2.02 | 0.94 | 0.71 | 1.24 | 1.12 | 1.04 | 1.21 | 1.23 | 1.07 | 1.42 | 1.24 | 0.78 | 1.98 |
| 17 | western and central asia | 0.79 | 0.77 | 0.81 | 0.81 | 0.72 | 0.91 | 0.84 | 0.77 | 0.90 | 0.92 | 0.70 | 1.19 | 0.57 | 0.47 | 0.69 | 0.80 | 0.77 | 0.84 | 0.76 | 0.71 | 0.82 | 0.87 | 0.73 | 1.03 |
| 18 | northern africa | 0.69 | 0.67 | 0.72 | 0.79 | 0.63 | 0.98 | 0.82 | 0.74 | 0.91 | 0.83 | 0.59 | 1.16 | 0.70 | 0.53 | 0.92 | 0.71 | 0.66 | 0.77 | 0.70 | 0.67 | 0.73 | 0.76 | 0.56 | 1.03 |
| 19 | 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 |
| 20 | caribbean | 1.39 | 1.35 | 1.42 | 1.12 | 0.91 | 1.37 | 1.42 | 1.25 | 1.61 | 0.98 | 0.56 | 1.71 | 1.26 | 0.95 | 1.66 | 1.42 | 1.37 | 1.46 | 1.48 | 1.41 | 1.55 | 1.04 | 0.70 | 1.55 |
| 21 | central america | 0.93 | 0.90 | 0.96 | 1.01 | 0.91 | 1.12 | 0.93 | 0.87 | 1.00 | 1.13 | 0.85 | 1.49 | 0.71 | 0.62 | 0.81 | 0.88 | 0.84 | 0.93 | 1.13 | 1.04 | 1.23 | 0.70 | 0.47 | 1.04 |
| 22 | south america | 1.03 | 1.00 | 1.06 | 0.87 | 0.77 | 0.99 | 0.94 | 0.85 | 1.03 | 0.81 | 0.56 | 1.18 | 0.69 | 0.58 | 0.82 | 1.15 | 1.11 | 1.20 | 0.92 | 0.85 | 0.99 | 0.98 | 0.69 | 1.39 |
| 23 | united states | 0.82 | 0.80 | 0.85 | 0.80 | 0.74 | 0.87 | 0.79 | 0.73 | 0.87 | 0.78 | 0.63 | 0.97 | 0.74 | 0.62 | 0.88 | 0.86 | 0.81 | 0.91 | 0.84 | 0.75 | 0.94 | 0.83 | 0.72 | 0.96 |
| 24 | eastern europe | 0.81 | 0.79 | 0.84 | 0.72 | 0.66 | 0.79 | 0.85 | 0.78 | 0.93 | 0.88 | 0.70 | 1.12 | 0.67 | 0.58 | 0.78 | 0.83 | 0.80 | 0.87 | 0.87 | 0.80 | 0.93 | 0.95 | 0.71 | 1.26 |
| 25 | united kingdom | 0.91 | 0.88 | 0.95 | 0.88 | 0.81 | 0.96 | 0.93 | 0.84 | 1.02 | 0.63 | 0.44 | 0.92 | 0.59 | 0.45 | 0.78 | 0.97 | 0.92 | 1.03 | 0.69 | 0.54 | 0.88 | 0.81 | 0.64 | 1.02 |
| 26 | rest of western europe | 0.78 | 0.75 | 0.80 | 0.77 | 0.71 | 0.84 | 0.83 | 0.77 | 0.90 | 0.76 | 0.58 | 0.98 | 0.74 | 0.64 | 0.87 | 0.81 | 0.78 | 0.85 | 0.70 | 0.66 | 0.75 | 0.89 | 0.74 | 1.06 |
| 27 | rest of the world | 1.18 | 1.11 | 1.25 | 1.31 | 1.19 | 1.43 | 1.18 | 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 | 1.66 | 1.18 | 2.35 |

Question: what was the ptb rate among central american mothers, driven by manitoba?
Answer: 0.71

Question: what was the ptb rate among central american mothers, driven by ontario?
Answer: 0.88

Question: what was the ptb rate among central american mothers, driven by quebec?
Answer: 1.13

Question: what was the ptb rate among south american mothers in ontario?
Answer: 1.15