Table 5.

Multivariate coefficient of determination (R2) results.

Variables			R 2				ΔR2a		ƒ 2b		Effect size
			In		Out
Perceived social support
	Control variables	0.646		0.640		0.006		0.017		Insignificant
	Age	0.646		0.646		0		0.000		Insignificant
	Gender	0.646		0.643		0.003		0.008		Insignificant
	Living area	0.646		0.646		0		0.000		Insignificant
	Educational level	0.646		0.644		0.002		0.006		Insignificant
Perceived social presence
	Control variables	0.594		0.587		0.007		0.017		Insignificant
	Age	0.594		0.594		0		0.000		Insignificant
	Gender	0.594		0.593		0.001		0.002		Insignificant
	Living area	0.594		0.590		0.004		0.010		Insignificant
	Educational level	0.594		0.592		0.002		0.005		Insignificant
Perceived responsiveness
	Control variables	0.577		0.562		0.015		0.035		Small
	Age	0.577		0.572		0.005		0.012		Insignificant
	Gender	0.577		0.569		0.008		0.019		Insignificant
	Living area	0.577		0.576		0.001		0.002		Insignificant
	Educational level	0.577		0.575		0.002		0.005		Insignificant
Patient compliance
	Control variables	0.687		0.684		0.003		0.010		Insignificant
	Age	0.687		0.687		0		0.000		Insignificant
	Gender	0.687		0.687		0		0.000		Insignificant
	Living area	0.687		0.685		0.002		0.006		Insignificant
	Educational level	0.687		0.686		0.001		0.003		Insignificant

^aΔR²: R²_In−R²_Out.

^bƒ²: Cohen ƒ².