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Table 1 Characteristics of the GRECF study participants by levels of famine severity

From: Early-life exposure to severe famine is associated with higher methylation level in the IGF2 gene and higher total cholesterol in late adulthood: the Genomic Research of the Chinese Famine (GRECF) study

Covariates Overall (n = 188) Famine experience level P
Moderate (n = 83) Severe (n = 105)
Male, N (%) 91 (48.4) 43 (51.8) 48 (45.7) 0.41
Age, years, mean (SD) 54.2 (2.3) 53.8 (2.4) 54.5 (2.2) 0.0001
Education levels, N (%)     
 No more than elementary school 58 (30.9) 30 (36.1) 28 (26.7) 0.21
 Middle school 72 (38.3) 28 (33.7) 44 (41.9)
 High school 49 (26.1) 19 (22.9) 30 (28.6)
 Some college and above 9 (4.8) 6 (7.2) 3 (2.9)
Current smoker, N (%) 66 (36.7) 23 (30.7) 43 (41.0) 0.16
Current drinker, N (%) 76 (40.4) 29 (34.9) 47 (44.8) 0.17
LDL, mmol/L, mean (SD) 2.9 (0.8) 2.6 (0.6) 3.2 (0.9) 7.91 × 10−7
HDL, mmol/L, mean (SD) 1.3 (0.3) 1.2 (0.3) 1.3 (0.4) 0.007
logTG, mean (SD) 0.4 (0.5) 0.4 (0.5) 0.5 (0.5) 0.08
TC, mmol/L, mean (SD) 4.9 (0.9) 4.4 (0.7) 5.2 (0.9) 1.64 × 10−9
  1. SD standard deviation, LDL-C low-density lipoprotein cholesterol, HDL-C high-density lipoprotein cholesterol, logTG logarithmically transformed triglycerides, TC total cholesterol