Table 1.

Demographics characteristics of the study population according to psychosis risk status (N=2059)

Characteristics	All Participants (N=2059)		Low risk for psychosis (N=1490)		High risk for psychosis b (N=569)		P-value
	n	%	n	%	n	%
Age (years) a	27.91 (6.28)		28.03 (6.32)		27.62 (6.18)		0.18
Age (years)
18–19	131	6.36	93	6.24	38	6.68	0.52
20–29	1144	55.56	815	54.70	329	57.82
30–34	431	20.93	321	21.54	110	19.33
≥35	353	17.14	261	17.52	92	16.17
Education (years)
≤6	25	1.21	15	1.01	10	1.76	<0.0001
7–12	876	42.54	592	39.73	284	49.91
>12	1150	55.85	877	58.86	273	47.98
Mestizo ethnicity	1657	80.48	1223	82.08	434	76.27	0.002
Married/living with a partner	1703	82.71	1240	83.22	463	81.37	0.34
Employed	1020	49.54	759	50.94	261	45.87	0.04
Difficulty paying for basics	885	42.98	613	41.14	272	47.80	0.005
Difficulty paying for medical care	838	40.70	589	39.53	249	43.76	0.08
Smoked prior to this pregnancy	296	14.38	209	14.03	87	15.29	0.47
Smoking during pregnancy	42	2.04	30	2.01	12	2.11	0.89
Alcohol consumption prior to this pregnancy	649	31.52	480	32.21	169	29.70	0.27
Alcohol consumption during pregnancy	109	5.29	74	4.97	35	6.15	0.27
Nulliparous	943	45.80	692	46.44	251	44.11	0.34
Planned pregnancy	785	38.13	577	38.72	208	36.56	0.36
Gestational age (weeks) at interview a	11.09 (3.95)		11.09 (3.94)		11.07 (3.98)		0.89
Childhood abuse	817	39.68	523	35.10	294	51.67	<0.0001
Lifetime intimate partner violence	504	24.48	307	20.60	197	34.62	<0.0001
PHQ-9a	7.00 (4.37)		6.43 (4.09)		8.50 (4.71)		<0.0001
GAD-7a	5.24 (3.84)		4.69 (3.66)		6.68 (3.95)		<0.0001
PCL-Ca	23.72 (7.73)		22.37 (6.56)		27.27 (9.29)		<0.0001

^aMean (Standard Deviation)

^bPQ-raw ≥6

For continuous variables, P-value was calculated using the Student’s t test; for categorical variables, P-value was calculated using the Chi-square test.

Abbreviations: PHQ-9, The Patient Health Questionnaire 9-item; GAD-7, Generalized Anxiety Disorder 7-item; PCL-C, PTSD CheckList – Civilian Version.