. Author manuscript; available in PMC: 2014 Jun 13.

Published in final edited form as: Bipolar Disord. 2013 May 7;15(4):394–404. doi: 10.1111/bdi.12071

Table 3.

Estimated risk of subsequent postpartum psychosis (PP) episode for clinical factors related to the index PP based on bivariate analysis controlling for age at index PP episode, parity, and time since the index PP episode occurred

Variable	B	SE	Odds ratio	95% CI	p-value
Age at index PP episode (years)	−0.11	0.06	0.90	0.80–1.01	0.06
Time to subsequent pregnancy (months)	0.02	0.01	1.03	1.00–1.05	0.05
Experienced a psychiatric illness prior to index PP (yes)^a	0.23	0.56	1.26	0.42–3.81	0.67
Duration of index PP episode (weeks)	0.03	0.01	1.03	1.01–1.05	0.02
Had a family history of a mood disorder (yes)^a	0.27	0.55	1.31	0.45–3.80	0.62
Had a female relative with postpartum illness (yes)^a	0.41	0.91	1.50	0.25–8.98	0.66
Clinical presentation of PP (mania or mixed)^a	0.22	0.76	1.25	0.21–5.53	0.77
Perplexity or confusion was present in index PP (yes)^a	0.05	0.52	1.05	0.38–2.94	0.92
Suicidal behaviors were present in index PP (yes)^a	0.57	0.54	1.77	0.61–5.09	0.29
Involuntarily detained for index PP (yes)^a	0.58	0.59	1.78	0.56–5.69	0.33

SE = standard error; CI = confidence interval.

Reference category is the presence of the clinical variable.