Patterns of adverse childhood experiences and associations with prenatal substance use and poor infant outcomes in a multi-country cohort of mothers: a latent class analysis

Table 4 Significant differences between class-specific thresholds of distal outcomes using χ²tests

Class (threshold)	Class 1 (n = 89)	Class 2 (n = 152)	Class 3 (n = 474)
Prenatal alcohol use
c1 (1.086)
c2 (0.864)	0.018
c3 (1.645)	0.035	0.017
c4 (2.651)	0.008	-0.010	-0.027
Prenatal heavy alcohol use
c1 (2.372)
c2 (2.581)	-0.401
c3 (3.216)	-0.061	-0.019
c4 (4.279)	-0.094	-0.053	-0.033
Prenatal tobacco use
c1 (1.119)
c2 (1.137)	0.015
c3 (2.144)	0.036	0.020
c4 (2.791)	0.003	-0.012	-0.033
Prenatal heavy tobacco use
c1(1.463)
c2(1.472)	-0.007
c3(2.919)	-0.053	-1.552
c4(3.347)	-0.006	0.002	0.553
Prenatal other drug use
c1(2.010)
c2(2.501)	-0.058
c3(2.744)	0.064	0.122
c4(3.701)	-0.131*	-0.071	-0.196†
Low birth weight
c1(2.221)
c2(2.031)	-0.143*
c3(2.833)	0.014	0.163 ‡
c4(2.094)	-0.087	0.044	-0.1017*
Infant prematurity
c1(2.150)
c2(2.446)	0.069
c3(2.414)	0.035	-0.034
c4(2.437)	0.027	-0.042	-0.008

The values under column one are class specific threshold values for each distal outcome. The values in columns two to four are the results from the pairwise significance tests
^* = P < 0.05, † = P < 0.01, ‡ = P < 0.001

ISSN: 1471-2393