Table 3.

Multi-nominal regression coefficients for predicting the likelihood for postpartum PTSD and postpartum depression comorbidity

	Comorbidity vs. None		Comorbidity vs. PP-depression		Comorbidity vs. PP-PTSD
	b	OR	b	OR	b	OR
Newborn complications	−0.78	0.46	0.42	1.52	0.23	1.26
Primiparity	0.13	1.14	−0.92**b	2.51	1.06	2.89
Age of mother	−0.13**a	1.14	0.02	1.02	0.15	1.16
Level of education	−0.42	0.66	−0.04	0.97	0.18	1.20
Pre-childbirth mental health problems	−1.35**	0.26	−0 82*	0.44	−0.08	0.92
History of childbirth trauma	0.35	1.42	0.29	1.34	−1.57*	0.21
History of non-childbirth trauma	0.01	1.01	−0.03	0.98	0.09	1.09
Obstetric complications in childbirth	−0.19	0.83	−0.72*	0.49	0.04	1.04
Duration of childbirth	−0.02**	0.98	−0.03***	0.97	−0.01	0.99
Emergency cesarean	−1.24*	0.29	−0.86*	0.42	−0.31	0.73
Peritraumatic distress	−0.46*	0.63	−0.68***	0.51	−0.23	0.80
Postpartum general distress	−7 54***	0.01	−1.31***	0.27	−4 27***	0.01

Note. Complication group = childbirth-related infant health complications resulting in NICU admission. PP = postpartum. OR = odd ratios. Comorbidity PTSD + depression served as the reference group (coded 0) and thus negative coefficients relate to higher likelihood for comorbidity.

^a= refers to younger age and higher likelihood for comorbidity

^b= refers to not being primiparous and higher likelihood for comorbidity.

^***p < .001