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Table 2 Binomial probability analysis of births by Indian-born women living in Norway where all older siblings are girls, by sex and birth order, 1969-2012

From: Changing trend? Sex ratios of children born to Indian immigrants in Norway revisited

  Period
  1969-1986 1987-1996 1997-2005 2006-2012
Second order births
Male births/all births 76/152 110/224 122/240 124/259
Percentage boys 50.0 49.1 50.8 47.9
z −0.335 −0.675 −0.163 −1.121
Third order births
Male births/all births 14/39 35/57 40/65 27/57
Percentage boys 35.9 61.4 61.5 47.4
z −1.932 1.517* 1.642* −0.603
  1. *: Significant at the 0.10 level.
  2. Since we consider testing of one-sided hypotheses, we do not report (two-sided) confidence intervals for the probability parameter.