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Table 1 Demographic Information

From: Broad autism phenotype features of Chinese parents with autistic children and their associations with severity of social impairment in probands

  PCA (n = 299) PTC (n = 274) t2 p value
  Mean or N (SD or %) Mean or N (SD or %)   
Age of child, Months 59.60(14.89) 58.63(15.14) −0.771 0.441
Gender of child, N (%)    97.10 <0.001
 Boys 258(86.3 %) 131(47.8 %)   
 Girls 41(13.7 %) 143(52.2 %)   
Child’s SRS total score 98.93(25.35) 43.23(11.29) −30.532 <0.001
Age of father, Years 35.07(3.80) 34.97(3.94) −0.318 0.751
Age of mother, Years 32.88(3.42) 32.60(3.40) −0.973 0.331
Education of father, N (%)    14.610 0.001
 Primary to junior high school 29(9.7 %) 58(21.1 %)   
 High school to some college 146(48.9 %) 116(42.4 %)   
 Undergraduate or above 124(41.4 %) 100(36.5 %)   
Education of mother, N (%)    19.522 <0.001
 Primary to junior high school 43(14.4 %) 81(29.5 %)   
 High school to some college 139(46.5 %) 102(37.2 %)   
 Undergraduate or above 117(39.1 %) 91(33.3 %)   
Family income (Yuan)    44.487 <0.001
 Less than 30,000 57(19.1 %) 35(12.8 %)   
 30,000-less than 50,000 93(31.1 %) 41(15 %)   
 50,000-less than 70,000 48(16.1 %) 34(12.4 %)   
 70,000-less than 100,000 43(14.4 %) 53(19.3 %)   
 More than 100,000 58(19.4 %) 111(40.5 %)   
  1. PCA: parents of children with autism; PTC: parents of typically developing children. SRS: Social Responsiveness Scale. Sixty-three children with autism and sixty-three typically developing children who were younger than four 4 years old, were excluded from the analyses of SRS scores. Family income: according to the annual per capita income statistics published by the statistics for Hunan province in 2011.