. 2023 Mar 15;25:e41793. doi: 10.2196/41793

Table 2.

Correlation analysis (Pearson correlation coefficients and two-tailed P values) among the key variables (N=2661).

Variable			Number of WeChat friends		Hours spent on social interaction of WeChat use		Attitude toward social interaction of WeChat use		SIWUI^a		USCW^b		Rumination		Antenatal depression
Number of WeChat friends
	r	1		0.22		0.15		0.65		0.08		0.00		–0.06
	P value	—^c		<.001		<.001		<.001		<.001		.70		.002
Hours spent on social interaction of WeChat
	r	0.22		1		0.32		0.73		0.12		–0.01		0.04
	P value	<.001		—		<.001		<.001		<.001		.66		.05
Attitude toward social interaction of WeChat use
	r	0.15		0.32		1		0.70		0.37		0.09		0.05
	P value	<.001		<.001		—		<.001		<.001		<.001		.01
SIWUI
	r	0.65		0.73		0.70		1		0.28		0.04		0.01
	P value	<.001		<.001		<.001		—		<.001		.04		.54
USCW
	r	0.08		0.12		0.37		0.28		1		0.39		0.31
	P value	<.001		<.001		<.001		<.001		—		<.001		<.001
Rumination
	r	0.00		–0.01		0.09		0.04		0.39		1		0.60
	P value	.70		.66		<.001		.04		<.001		—		<.001
Antenatal depression
	r	–0.06		0.04		0.05		0.01		0.31		0.60		1
	P value	.002		.05		.01		.54		<.001		<.001		—

^aSIWUI: social interaction on WeChat use intensity; each item was first standardized before taking an average to create scale due to different item scale ranges.

^bUSCW: upward social comparison on social interaction of WeChat.

^cNot applicable.