Table 4.

Test results of mediating effect.

Mediating route	Point estimate	Product of co-efficients			Bootstrap 1,000 times 95% CI
					Bias-corrected		Percentile
		S.E.	Est./S.E	P -value	Lower 2.5%	Upper 2.5%	Lower 2.5%	Upper 2.5%
Wellbeing ← Upward social comparison ← Fitness app-use	0.195	0.031	6.382	***	0.107	0.247	0.113	0.257

^***P < 0.001.