Table 4. Results of the GEE^a analysis with covariate adjustment for the preassessment scores of each variable^b.

Measures		Intention-to-treat		Per protocol
		Wald chi-square (df)	P value	Wald chi-square (df)	P value
PHQ-9c
Group×Time		28.7 (2)	<.001	29.5 (2)	<.001
Group		17.0 (1)	<.001	18.1 (1)	<.001
Time		118.1 (2)	<.001	118.0 (2)	<.001
BDI-IId
Group×Time		28.5 (2)	<.001	35.8 (2)	<.001
Group		23.1 (1)	<.001	30.6 (1)	<.001
Time		81.8 (2)	<.001	96.0 (2)	<.001
SACQ-Re
Group×Time		30.9 (2)	<.001	32.0 (2)	<.001
Group		26.2 (1)	<.001	27.5 (1)	<.001
Time		93.3 (2)	<.001	94.9 (2)	<.001
ATQP-SFf
Group×Time		7.6 (2)	.02	7.8 (2)	.02
Group		6.0 (1)	.02	5.9 (1)	.02
Time		35.9 (2)	<.001	35.8 (2)	<.001
ATQN-SFg
Group×Time		9.3 (2)	.01	9.0 (2)	.01
Group		10.3 (1)	.001	10.0 (1)	.002
Time		2.8 (2)	.24	2.8 (2)	.25

^aGEE: generalized estimating equation.

^bIntervention pre n=91, post n=80, F/U n=78; Control pre n=79, post n=79, F/U n=78.

^cPHQ-9: Patient Health Questionnaire-9.

^dBDI-II: Beck Depression Inventory-II.

^eSACQ-R: Student Adaptation to College Questionnaire—Revised.

^fATQP-SF: Automatic Thought Questionnaire—Positive, Short Form.

^gATQN-SF: Automatic Thought Questionnaire—Negative, Short Form.