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Table 2 BMI Mean and standard deviation by age and gender for the Republic of Ireland and Northern Ireland

From: Prevalence of overweight and obesity on the island of Ireland: results from the North South Survey of Children's Height, Weight and Body Mass Index, 2002

Republic of Ireland
  Male Female
Age (Yrs) N Mean (Std) 95% CI N Mean (Std) 95% CI
4 630 16.7 (1.6) 16.6–16.8 772 16.6 (1.9) 16.5–16.7
5 2474 16.6 (1.6) 16.5–16.7 2278 16.6 (2) 16.5–16.7
6 224 16.8 (2.1) 16.5–17.0 152 16.6 (1.9) 16.3–16.9
7 338 17.1 (2.2) 16.9–17.4 451 17.6 (3) 17.3–17.9
8 1372 17.6 (2.8) 17.5–17.8 1327 17.9 (2.9) 17.7–18.1
9 152 17.9 (3.3) 17.4–18.4 85 18.2 (3.6) 17.4–19
11 327 19.5 (3.4) 19.2–19.9 438 20.3 (3.8) 19.9–20.7
12 1325 19.9 (3.6) 19.7–20.1 1381 20.3 (4) 20.1–20.5
13 206 20.1 (3.5) 19.6–20.6 154 20.9 (3.9) 20.2–21.5
14 608 21.2 (3.7) 20.9–21.5 708 22.1 (3.8) 21.9–22.4
15 1051 21.7 (3.5) 21.5–21.9 935 22.2 (3.8) 21.9–22.4
16 88 21.8 (3.4) 21.1–22.5 73 22.5 (4.4) 21.4–23.5
Northern Ireland
  Male Female
Age (Yrs) N Mean (Std) 95% CI N Mean (Std) 95% CI
4 50 16.7 (1.4) 16.3–17.1 54 16.2 (1.2) 15.9–16.5
5 356 16.6 (1.7) 16.4–16.8 365 16.6 (1.9) 16.4–16.8
8 131 17.1 (1.9) 16.8–17.4 119 18.1 (3.3) 17.5–18.7
11 47 19.3 (2.9) 18.4–20.1 57 20.3 (3.8) 19.3–21.4
12 115 19.7 (3.3) 19.1–20.3 122 20.2 (3.8) 19.5–20.8
13       
14 108 21.6 (3.8) 20.9–22.4 86 21.1 (3) 20.4–21.7
15 198 21.7 (3.6) 21.2–22.2 231 22.2 (3.6) 21.7–22.6