Table 4:

Multivariable model

VARIABLE	ODDS RATIO	95% CI	P VALUE
CLINICAL ILLNESS INDICATOR
YES	3.1	1.1 – 9.0	0.040
NO	1.0
PARENT PERCEIVES “SICK”
YES	3.8	1.2 – 12.6	0.027
NO	1.0
INTERACTION BETWEEN CLINICAL ILLNESS / PARENT PERCEIVES “SICK”
YES	0.7	0.1 – 3.9	0.696
NO	1.0
RN PERCEIVES “SICK”
YES	1.0	0.3 – 3.4	0.999
NO	1.0
MD PERCEIVES “SICK”
YES	1.7	0.6 – 5.1	0.355
NO	1.0
HISTORY OF PREVIOUS MENTAL HEALTH CONCERNS
YES	0.9	0.4 – 2.1	0.767
NO	1.0
SINGLES PARENT
YES	1.7	0.4 – 8.0	0.510
NO	1.0

Table 4 shows a multivariable logistic regression model of infant illness and perceptions of infant illness, as well as an interaction term between parent perceived illness and objective infant illness. “High risk” infant characteristics are defined as any infant clinical characteristic associated with parents having more than twice the baseline proportion of screening positive for PTSD, and included: birth at 23–25 weeks gestation, birth weight < 1 kg, late onset sepsis, PVL, HIE requiring whole body cooling, palliative care consultation, vasopressor support, and tracheostomy. Parent, nurse and physician perceived as “sick” was defined as responding to he question “How sick is your child/patient?” on a 5-point Likert scale as “moderately – very sick”.