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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Dev Psychol. 2011 Sep 5;47(6):1579–1588. doi: 10.1037/a0025292

Table 1.

Sociodemographic information by family type

Natural conception Egg donation Surrogacy F p
Mean SD Mean SD Mean SD
Age of child (months) 91.57 3.85 88.91 3.29 89.06 3.77 7.25 < .01
Age of mother (years) 42.09 3.06 47.13 6.01 45.75 5.38 13.35 < .001
Child’s sex N % n % n % χ 2 p
  Boy 26 48% 20 63% 14 44% 2.54 (2) ns.
  Girl 28 52% 12 37% 18 56%
Social class
  Professional 28 52% 14 44% 14 44% 11.12 (4) < .05
  Managerial / technical 25 46% 10 31% 13 41%
  Skilled / non-manual 1 2% 8 25% 5 15%
Number of siblings
  None 3 6% 14 44% 9 28% 20.22 (4) < .001
  One 45 83% 13 41% 19 59%
  Two 6 11% 5 15% 4 13%