Relationship between severity of obsessive-compulsive symptoms and schizotypy in obsessive-compulsive disorder

Figures & data

Table 1 Demographic and clinical characteristics (n = 60)

Characteristic	Results, mean (SD)
Age (years)	32.9 (9.8)
Education (years)	13.7 (2.0)
Y-BOCS total score	24.2 (6.5)
Y-BOCS obsession score	12.0 (3.5)
Y-BOCS compulsion score	12.2 (3.6)
HAM-D score	7.8 (4.5)
HAM-A score	8.0 (5.3)
SPQ score	24.7 (13.6)

Abbreviations: SD, standard deviation; Y-BOCS, Yale–Brown Obsessive Compulsive Scale; HAM-D, Hamilton Depression Rating Scale; HAM-A, Hamilton Anxiety Rating Scale; SPQ, Schizotypal Personality Questionnaire.

Table 2 Pearson correlation coefficients between Yale-Brown Obsessive Compulsive Scale (Y-BOCS) and Schizotypal Personality Questionnaire (SPQ) scores

SPQ score	Y-BOCS score, r (P)
	Total	Obsession	Compulsion
Total	0.31* (0.02)	0.34** (0.009)	0.24 (0.06)
Cognitive-perceptual	0.34** (0.008)	0.36** (0.005)	0.24 (0.07)
Interpersonal	0.21 (0.34)	0.21 (0.34)	0.10 (0.42)
Disorganized	0.28* (0.02)	0.31* (0.01)	0.20 (0.11)

Notes:

* P < 0.05;

** P < 0.01.

Table 3 Linear regression analysis predicting the Yale–Brown Obsessive Compulsive Scale obsession score

Dependent variable	B	SEs	β	r	R^2	Adjusted R^2
Step 1
HAM-D score	0.09	0.12	0.12	0.22	0.07	0.04
HAM-A score	0.12	0.10	0.18	0.25
Step 2
HAM-D score	0.13	0.12	0.11	0.22	0.13	0.09*
HAM-A score	0.15	0.10	0.12	0.25
SPQ score	0.07	0.32	0.26*	0.31

Note:

* P < 0.05.

Abbreviations: HAM-D, Hamilton Depression Rating Scale; HAM-A, Hamilton Anxiety Rating Scale; SPQ, Schizotypal Personality Questionnaire; B, regression coefficient; SE standard error; β, standard partial regression coefficient; r, correlation coefficient. R², decision coefficient.

Table 4 Pearson correlation coefficients between dependent variables for linear regression analyses

	HAM-D score	HAM-A score	SPQ score
HAM-D score	1
HAM-A score	0.58* (0.001)	1
SPQ score	0.17 (0.20)	0.25 (0.06)	1

Note:

* P < 0.01.

Abbreviations: HAM-D, Hamilton Depression Rating Scale; HAM-A, Hamilton Anxiety Rating Scale; SPQ, Schizotypal Personality Questionnaire.