Table 8.

Multivariate Linear Regressions Predicting Ranked Unresolved Scale Scores

Source of variation	Ranked unresolved scale scores
	UO			UL
	β	t	P	β	t	P
Model 1: Control variables
Sex	.19	1.67	.10	.20	1.77	.08
Current age	.26	2.17	.03	.33	2.66	.01
Biological parent diagnosis	.07	0.66	.51	.05	0.47	.64
Age adopted contrasts
1 to 3 months	.05	0.48	.64	.06	0.57	.57
3 to 6 months	−.02	−0.18	.86	−.06	−0.51	.61
Greater than 6 months	−.31	−2.45	.02	−.29	−2.37	.02
Depression	.13	0.84	.41	.16	1.03	.31
Interpersonal sensitivity	.19	1.21	.23	.18	1.14	.26
Model 2: 5-HTTLPR genotype
Sex	.15	2.42	.02	.14	2.18	.03
Current age	06	0.86	.39	.11	1.67	.10
Trauma reported	−.03	−0.50	.62	−.11	−1.66	.10
Dummy unresolved presenta	.79	12.44	.001	.78	11.79	.001
5-HTTLPR contrasts
Homozygous short	.07	1.02	.31	.14	2.03	.05
Heterozygous short	.18	2.70	.01	.26	3.71	.001
Model 3: 5-HTTLPR dominance effect
Sex	.16	2.51	.01	.14	2.28	.03
Current age	.06	0.92	.36	.11	1.73	.09
Trauma reported	−.03	−0.42	.67	−.10	−1.58	.12
Dummy unresolved presenta	.78	12.30	.001	.75	11.67	.001
5-HTTLPR dominancec	.14	2.30	.02	.22	3.47	.001

Note. Biological parent diagnosis includes alcohol problems and/or antisocial behaviors, U_O = scale score for unresolved loss or trauma (N = 86): U_L = scale score for unresolved loss (N = 84).

^aUnresolved scale score recoded into dummy variable (scale score of l =0; scale scores > l = 1).

^bDummy coding was used to construct the 5-HTTLPR contrasts; two vectors were created: the homozygous short vector (s/s = l, s/l = 0, l/l = 0) and the heterozygous short vector (s/s = 0, s/l = l, l/l = 0).

^cDummy coding was used to construct the dominance contrast: s/s or s/l = l and l/l = 0.