Post-treatment predictors of follow-up status for obsessive-compulsive disorder treated with concentrated exposure therapy

Figures & data

Table 1. Measures of psychiatric symptoms

	n	M	SD
Pre-treatment measures
Obsessive-compulsive symptoms
Y-BOCS	97	25.26	5.07
Anxiety
GAD-7	56	12.05	5.37
BAI	25	19.24	11.32
Depression
PHQ-9	53	13.23	5.69
BDI	43	17.58	9.96
Post-treatment predictors
Obsessive-compulsive symptoms
Y-BOCS	97	10.13	4.68
Anxiety
GAD-7	53	9.68	5.06
BAI	44	12.30	8.82
Depression
PHQ-9	53	9.74	5.50
BDI-II	44	12.04	9.43
Follow-up measure
Y-BOCS	97	11.86	6.93

Notes: Y-BOCS = Yale-Brown Obsessive Compulsive Scale, GAD-7 = Generalized Anxiety Disorder 7-item scale, BAI = Beck Anxiety Inventory, PHQ-9 = Patient Health Questionnaire, BDI-II = Beck Depression Inventory, revised version.

Table 2. Summary of logistic regression analysis for post-treatment variables predicting symptom remission at follow-up

	B	SE B	e^B	p
Analysis 1 (n = 97)
Age	−.04	.02	.96	.07
Gender	.27	.51	1.31	.59
Depression	1.17	.55	3.21	.03
Anxiety	.37	.53	1.45	.48
OCD symptoms	1.02	.47	2.77	.03
Analysis 2 (n = 97)
Age	−.03	.02	.97	.21
Gender	.42	.50	1.53	.39
3 Risk factors	2.31	.69	10.09	<.01
Analysis 3 (n = 72)
Age	−.05	.03	.95	.07
Gender	.23	.63	1.26	.71
3 Risk factors	2.16	.89	8.71	.02

Notes: e^B = exponential B, Depression, anxiety and Y-BOCS score post-treatment coded as 1 for at risk and 0 for not at risk. Y-BOCS score at follow-up coded as 1 if ill at follow-up (i.e. Y-BOCS > 12), and 2 if symptom remission at follow-up (i.e. Y-BOCS ≤ 12). In analysis 1, age, gender and all three risk factors were entered separately as independent predictors. In analysis 2, age, gender and having all three risk factors were entered as independent variables. The third analysis was identical to the second, except for the exclusion of patients not recovered post-treatment. Y-BOCS-score at follow-up (above or at/below 12) was entered as dependent variable for all three analyses.

Figure 1. Remission rates at follow-up decrease with each added post-treatment risk factor.

Notes: The panel displays the percentage of patients scoring below clinical cut-off (i.e. <12) on the Y-BOCS at follow-up for patients having 0, 1, 2 or 3 risk factors (scores above cut-off on depression, anxiety and/or Y-BOCS at post-treatment).