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. 2022 Oct 31;10(10):e28082. doi: 10.2196/28082

Table 2.

Internal consistency and test-retest reliability of mental health assessments.

Measure and mode			Full sample				Low-stake condition					High-stake condition					ICC^a
			Values, mean (SD)		Cronbach α		Values, mean (SD)		Cronbach α		Values, mean (SD)			Cronbach α
K10^b																		0.96
	Paper-based	19.36 (6.53)		.89		19.44 (5.66)		.84		19.28 (7.31)			.92
	Web-based	19.77 (6.67)		.88		19.47 (5.63)		.82		20.05 (7.57)			.91
	Chatbot-based	19.7 (6.45)		.86		19.43 (5.81)		.82		19.95 (7.04)			.89
BSI-18^c																		0.99
	Paper-based	11.54 (8.45)		.86		11.35 (6.72)		.78		11.73 (9.9)			.9
	Web-based	11.56 (8.89)		.87		11.29 (7.48)		.82		11.81 (10.12)			90
	Chatbot-based	11.09 (8.4)		.86		10.71 (7.09)		.8		11.46 (9.54)			.89
AUDIT-3^d																		1.00
	Paper-based	3.42 (2.45)		.80		3.50 (2.60)		.85		3.34 (2.30)			.74
	Web-based	3.40 (2.44)		.81		3.49 (2.62)		.86		3.32 (2.28)			.75
	Chatbot-based	3.43 (2.49)		.82		3.49 (2.64)		.86		3.38 (2.36)			.76

^aICC: intraclass correlation coefficient.

^bK10: Kessler Psychological Distress Scale.

^cBSI-18: Brief Symptom Inventory-18.

^dAUDIT-3: Alcohol Use Disorders Identification Test-3.