TABLE 1

Descriptive characteristics of the ADDM Network and Utah Genetics Study Samples

CharacteristicsASD CasesControls
nMean (SD)RangenMean (SD)Range
ADDM Network Sample
 Maternal age (y)12827.33 (5.89)16 to 411092026.54 (5.52)14 to 48
 Paternal age (y)11929.91 (6.36)17 to 501012629.09 (5.99)15 to 68
 Maternal education (y)12613.65 (2.21)6 to 171081813.39 (2.22)0 to 19
 Paternal education (y)11714.00 (2.62)1 to 17997714.13 (2.35)0 to 20
 Gestational age (wk)12538.46 (2.68)24 to 451090839.02 (2.02)23 to 51
 Parity1281.13 (1.38)0 to 6109121.27 (1.48)0 to 15
 Birth yeara
 Prepregnancy BMI12023.61 (5.19)16.06 to 44.381092023.26 (4.78)12.08 to 63.48
 Maternal wt gain during pregnancy (lb)12033.6 (15.92)–5 to 1401092030.95 (12.44)–67 to 144
Utah Genetics Study Sample
 Maternal age (y)28827.50 (5.41)16 to 4349328.88 (5.34)17 to 47
 Paternal age (y)28729.53 (5.97)18 to 5948731.05 (6.12)19 to 57
 Maternal education (y)28514.31 (1.72)10 to 1749014.43 (1.74)11 to 17
 Paternal education (y)28414.65 (1.93)9 to 1747814.78 (2.00)10 to 18
 Gestational age (wk)28838.97 (1.86)25 to 4349338.86 (1.95)24 to 44
 Parity2881.30 (1.64)0 to 124921.95 (1.90)0 to 15
 Birth year2881997.60 (3.95)1989 to 20054931999.26 (5.12)1989 to 2008
 Prepregnancy BMI27724.25 (4.89)15.95 to 42.7747024.92 (5.51)15.45 to 48.86
 Maternal wt gain during pregnancy (lb)27933.25 (12.49)–10 to 7447830.48 (12.20)–24 to 70
  • a Birth year is 1994 for entire sample.