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Table 1 Sample distributions of the variables in this study, CLHLS 1998 baseline survey

From: Interactions between Social/ behavioral factors and ADRB2 genotypes may be associated with health at advanced ages in China

Genotypes (dominant model, see endnote b)

Proportion

Other independent variables than genotypes

Proportion (or mean)

Carriers of rs1042718 minor allele

0.56

Urban residence

0.31

Carriers of rs1042719 minor allele

0.72

1+ years of schooling

0.22

Health indicators

 

Currently married

0.06

MMSE score 24+

0.35

High proximity to children

0.77

MMSE score 21-23

0.14

Currently doing regular exercise

0.21

MMSE score <21

0.51

Mean of social/leisure activities score (range: 0 to 7; 27.7% ≥2; 72.3% <2)

1.01

Self-reported poor health

0.45

Negative emotion

0.54

  1. Note: The minimum/maximum age, mean age, and standard deviation for female subjects are 90/113, 98.6, and 3.34, respectively; the corresponding figures for male subjects are 90/113, 101.0 and 2.78.