TABLE 5.

Washing dimension with anxiety disorders and washing dimension with obsessive-compulsive related disorders: best-fitting models and standardized parameters

		Estimated parameter		Fit statistic
Model		Common factors	Specific factors	−2LL	df	AIC	χ2	Δdf	P value
Washing, social phobia, panic, and generalized anxiety disorder
1 Cholesky saturated		ACE	ACE	23,004.4	9,938	3,128.4	-	-	-
2 IP		ACE	AE	23,005.6	9,948	3,109.6	1.23	10	.999
Washing, body dysmorphic, and hoarding disorder
1 Cholesky saturated		ACE	ACE	6,841.1	7,458	−8,074.9	-	-	-
2 IP		ACE	AE	6,841.1	7,461	−8,080.9	−0.0001	3	1
Standardized parameters for each best-fitting model number 2 (95% CI)
	Additive genetic (A)			Shared environment (C)			Nonshared environment (E)
	Common	Specific	Total A	Common	Specific	Total C	Common	Specific	Total E
SP	0.19(0.04–0.33)	0.16(0.09–0.21)	0.35(0.19–0.46)	0.06(0.00–0.19)	-	0.06(0.00–0.19)	0.31 (0.25–0.38)	0.28 (0.24–0.34)	0.59(0.53–0.66)
PD	0.27 (0.09–0.37)	0.00 (0.00–.05)	0.27 (0.09–0.37)	0.03 (0.00–0.18)	-	0.03 (0.00–0.18)	0.38(0.31–0.46)	0.32 (0.27–0.36)	0.70 (0.63–0.77)
GAD	0.16(0.05–0.24)	0.15(0.10–0.20)	0.30(0.18–0.39)	0.02(0.00–0.12)	-	0.02 (0.00–0.12)	0.28(0.22–0.35)	0.39 (0.34–0.45)	0.67 (0.61–0.75)
Washing	0.32 (0.05–0.58)	0.10(0.00–0.34)	0.42(0.11–0.60)	0.02 (0.00–0.25)	-	0.02 (0.00–0.25)	0.14(0.06–0.24)	0.43 (0.28–0.59)	0.56 (0.40–0.75)
BDD	0.26(0.13–0.43)	0.10(0.00–0.24)	0.36 (0.27–0.43)	-	0.00 (0.00–0.06)	0.00 (0.00–0.06)	0.15(0.06–0.31)	0.49(0.33–0.59)	0.63 (0.57–0.71)
HD	0.08 (0.03–0.17)	0.24(0.04–0.31)	0.32 (0.12–0.39)	-	0.00(0.00–0.15)	0.00(0.00–0.15)	0.20 (0.09–0.47)	0.48 (0.22–0.61)	0.68 (0.61–0.76)
Washing	0.20 (0.06–0.42)	0.26 (0.00–0.45)	0.46(0.16–0.62)	-	0.00 (0.00–0.00)	0.00 (0.00–0.00)	0.15(0.05–0.32)	0.39(0.22–0.59)	0.54(0.38–0.73)

−2LL, minus twice the log-likelihood; df, degrees of freedom; AIC, Akaike information criterion; χ², difference in goodness-of-fit statistic between the submodel and the full model; Δdf, change in degrees of freedom between the submodel and the full model; A, additive genetic factor; C, shared environmental factor; E, nonshared environmental factor; IP, independent pathway; CI, confidence intervals; HD, hoarding disorder symptoms; BDD, body dysmorphic disorder symptoms; PD, panic disorder symptoms; GAD, generalized anxiety disorder symptoms; SP, social phobia disorder symptoms.

At the bottom of the table is presented the standardized parameters for each best-fitting model (washing + ADs and washing + OCRDs). Total A, C, and E do not sum to 1 due to rounding. Each parameter can be multiplied by 100 to obtain the percentage (e.g., SP shows 35% of total A, 6% of total C, and 59% of total E).