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Table 1 Descriptive information and correlations with Quantitative Checklist for Autism in Toddlers (Q-CHAT) scores

From: Foetal testosterone and autistic traits in 18 to 24-month-old children

  Combined group Girls Boys Sex difference effect size (d)
Variable n Mean SD Range r n Mean SD Range r n Mean SD Range r
FT levela, nmol/Lc 129 0.59 0.41 0.05 to 2.28 0.40** 63 0.34 0.27 0.05 to 1.12 0.31* 66 0.82 0.42 0.15 to 2.28 0.36* 1.36
FE levela, pmol/L 129 307.12 186.29 108 to 1260 0.01 63 309.67 181.98 126 to 1260 0.06 66 304.70 191.68 108 to 1220 -0.01 0.03
Gestational age 120 16.92 1.83 13 to 26 -0.13 60 17.01 1.62 15 to 22.3 0.06 60 16.83 2.03 13 to 26 -0.25 0.10
Child age 129 19.25 1.52 18 to 24 -0.15 63 19.40 1.50 18 to 23 0.08 66 19.11 1.53 18 to 24 -0.19 0.19
Maternal age 129 35.67 4.21 21 to 46 0.06 63 35.81 4.26 24 to 46 -0.01 66 35.53 4.18 21 to 45 0.14 0.07
Parental education 127 3.56 1.05 1 to 5 -0.02 61 3.58 1.05 1 to 5 0.12 66 3.54 1.06 1 to 5 -0.13 0.04
Q-CHAT Scoreb 129 26.55 7.08 10 to 43 - 63 24.94 6.52 10 to 43 - 66 28.09 7.30 14 to 43 - 0.46
  1. aIndicates raw values.
  2. bSex difference is significant at the P < 0.05 level.
  3. cSex difference is significant at the P < 0.01 level.
  4. r = correlation value between each variable and Q-CHAT scores.
  5. * P < 0.05 level
  6. ** P < 0.01 level