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Table 3 Numbers of cases, relative risks (RR) and 95% confidence limits (CL) for other psychiatric conditions, by standard month of birth and sex.

From: Acute maternal stress in pregnancy and schizophrenia in offspring: A cohort prospective study

Estimated gestational month in June 1967 Date of birth Total, including unknown sex Males Females
   Cases RR1 95% CL2 Cases RR 95% CL1 Cases RR 95% CL1
1 Feb 1968 3 0.73 0.23–2.34 3 1.11 0.34–3.64 0 - -
2 Jan 1968 3 0.60 0.19–1.92 2 0.61 0.15–2.52 1 0.57 0.08–4.25
3 Dec 1967 9 ** 2.51 1.22–5.17 4 1.82 0.63–5.24 5 *** 3.55 1.31–9.65
4 Nov 1967 1 0.22 0.03–1.61 0 - - 1 0.51 0.07–3.77
5 Oct 1967 4 1.02 0.37–2.87 1 0.46 0.06–3.39 3 1.76 0.52–5.93
6 Sept 1967 3 0.90 0.28–2.92 1 0.63 0.09–4.71 2 1.14 0.27–4.87
7 Aug 1967 6 1.56 0.67–3.65 3 1.20 0.37–3.91 3 2.25 0.66–7.69
8 Jul 1967 5 1.04 0.42–2.60 4 1.81 0.64–5.13 1 0.38 0.05–2.79
9 Jun 1967 10 * 1.97 1.01–3.85 6 1.89 0.80–4.46 4 2.11 0.73–6.10
Comparison group (all others) 1964–76 633 1 reference 363 1 reference 270 1 reference
  1. 1. Adjusted for paternal age (continuous), maternal age (30–34, 35+ versus all others), low social class (father's occupation group 5,6 versus 1–4), years married and month of birth. 2. Additionally adjusted for sex. * p < .05; **p < .02 *** p < .003.