Adolescent mobile phone addiction during the COVID-19 pandemic predicts subsequent suicide risk: a two-wave longitudinal study

Table 5 Stepwise regression of suicidal risk with age, gender, COVID-19 related exposure, daytime sleepiness, depressive symptoms, and MPAI in adolescents (N=1609)

Independent variable	Step 1: Adjusted R²=0.001	Step 2: Adjusted R²= 0.003	Step 3: Adjusted R²= 0.244	Step 4: Adjusted R²= 0.259
Independent variable	Beta	Beta	Beta	Beta
Age	0.019	0.019	0.021	0.021
Gender	0.026	0.025	0.006	0.004
Someone in the community is infected		0.010	0.008	0.011
A relative or friend is infected		-0.037	-0.030	-0.035
A relative or friend died from the infection		-0.025	-0.018	-0.019
Daytime sleepiness_T2			0.410***	0.381***
Depression_T2			0.160***	0.130***
MPAI_T1				0.130***

Abbreviations: MPA_T1 Time1 mobile phone addiction score, Daytime sleepiness _T2 Time 2 daytime sleepiness score, Depression_T2 Time 2 depression score
***p < 0.001

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