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Table 1 Baseline demographic and socio-economic characteristics

From: Future expenditure risk of silent members: a statistical analysis

Demographic Characteristics SILENT-MEMBERS 2009 LOW-EXPENDITURE MEMBERS 2009
Number of members 238,180 121,700
Male (%)a 158,589 (66.57 %) 73,815 (60.65 %)
Age group   
 Age 1830 70,281 (29.51 %) 35,748 (29.37 %)
 Age 3040 54,917 (23.06 %) 29,680 (24.39 %)
 Age 4050 59,998 (25.09 %) 28,478 (23.40 %)
 Age 5063 52,984 (22.25 %) 27,794 (22.84 %)
Race (% White)a,b 78.38 80.17
Education (% Less than high school degree)a,b 18.33 17.25
Income (% Below poverty line)a,b 16.30 15.45
  1. aAll comparisons were significant with p-values <0.0001
  2. bRace, education and income were estimated using zip code level data