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Table 2 Levels (means ± standard deviations) of BMI, SBP and DBP of family members, stratified by family annual per-capita income levels and regions

From: Familial correlation and aggregation of body mass index and blood pressure in Chinese Han population

   Family annual per-capita income level Regions
   ≤1999 yuan (Group A) 2000 - 4999 yuan (Group B) ≥5000 yuan (Group C)   Major cities (Group A) Small or medium-sized cities (Group B) Rural areas (Group C)  
   (Nf = 2618) (Nf = 1892) (Nf = 1859)   (Nf = 1518) (Nf = 889) (Nf = 3962)  
BMI Fathers 22.7 ± 3.1 23.6 ± 3.2 24.3 ± 3.3 abc 24.6 ± 3.4 23.9 ± 3.2 22.9 ± 3.3 abc
Mothers 23.7 ± 3.7 24.3 ± 3.8 24.6 ± 3.4 abc 25.0 ± 3.6 24.6 ± 3.4 23.7 ± 3.6 abc
Sons 22.0 ± 3.1 22.4 ± 3.6 23.0 ± 3.8 abc 23.2 ± 4.3 22.7 ± 3.5 22.0 ± 3.5 abc
Daughters 21.8 ± 3.0 21.6 ± 3.2 21.2 ± 3.3 bc 21.7 ± 3.8 21.0 ± 2.7 21.6 ± 3.2 ab
SBP Fathers 125.6 ± 19.1 127.2 ± 19.8 127.7 ± 19.3 ac 128.2 ± 19.7 127.2 ± 18.6 126.1 ± 19.4 c
Mothers 126.6 ± 22.3 125.7 ± 21.0 126.2 ± 20.6   126.0 ± 20.6 125.4 ± 20.6 126.5 ± 22.0  
Sons 115.5 ± 12.0 115.9 ± 12.6 115.6 ± 11.6   115.5 ± 12.3 115.0 ± 12.0 115.9 ± 12.0  
Daughters 109.3 ± 12.3 108.2 ± 11.2 106.5 ± 11.6 bc 107.0 ± 11.6 106.2 ± 11.7 109.2 ± 11.6 bc
DBP Fathers 80.8 ± 11.6 81.7 ± 11.7 82.7 ± 11.5 abc 83.0 ± 11.7 82.9 ± 11.3 80.8 ± 11.6 bc
Mothers 80.0 ± 12.1 79.4 ± 11.8 79.8 ± 11.2   80.0 ± 11.3 79.6 ± 11.6 79.7 ± 12.0  
Sons 75.0 ± 9.3 75.1 ± 9.9 75.3 ± 8.9   75.8 ± 9.2 75.5 ± 9.6 74.8 ± 9.3 c
Daughters 71.1 ± 8.9 70.6 ± 8.8 69.7 ± 8.4 c 70.7 ± 8.4 69.6 ± 8.9 70.7 ± 8.8  
  1. Nf represents number of families.
  2. During the process of multiple comparisons by SNK method, ‘a’ refers to p< 0.05 when compared between group A and B; ‘b’ refers to p< 0.05 when compared between group B and C; ‘c’ refers to p< 0.05 when compared between group A and C.