Table 4.

Unadjusted relationship between the continuous ETI scores and inflammatory biomarkers, CRP and IL-6, within twin pairs.

	Overall Sample (241 Twin Pairs)				Monozygotic (146 Twin Pairs)				Dizygotic (95 Twin Pairs)
	CRP		IL-6		CRP		IL-6		CRP		IL-6
	β	p- value	β	p- value	β	p- value	β	p- value	β	p- value	β	p- value
Within Twin Effects
Total Trauma	0.004	0.83	−0.01	0.68	−0.04	0.81	−0.14	0.22	−0.04	0.88	0.25	0.18
General Trauma	0.02	0.67	−0.02	0.46	−0.03	0.85	−0.14	0.23	0.14	0.62	0.15	0.46
Physical Abuse	−0.01	0.84	0.04	0.41	−0.18	0.29	−0.02	0.84	−0.05	0.85	0.45	0.02
Emotional Abuse	0.02	0.73	−0.01	0.69	−0.17	0.37	−0.10	0.44	0.32	0.26	0.29	0.17
Sexual Abuse	−0.06	0.58	−0.03	0.68	0.10	0.63	0.01	0.97	−0.24	0.58	0.13	0.68

CRP: C-reactive protein; IL-6: interleukin-6

Regression coefficient (β) and p values were derived from mixed models for continuous variables that included a random intercept for pair. Effects are expressed as individual twin variation in ETI score points from their twin pair average, which corresponds to the absolute difference between the two brothers.