. 2021 Nov 15;93(2):e168–e187. doi: 10.1111/cdev.13712

TABLE A4.

Multinomial regression, membership class 1, 2, 3, and 4 (n = 1419)

	Class 1: Variably high problematic SMU, variably high SMU frequency			Class 2: Persistently high problematic SMU, persistently average SMU frequency			Class 3: Persistently low problematic SMU, persistently low SMU frequency			Class 4: Persistently low problematic SMU, variably high SMU frequency
	Ref. = c2	Ref. = c3	Ref. = c4	Ref. = c1	Ref. = c3	Ref. = c4	Ref. = c1	Ref. = c2	Ref. = c4	Ref. = c1	Ref. = c2	Ref. = c3
Controls
Girl (ref. = boy)	1.674^***	2.321^***	1.174^***	−1.674^***	0.647^*	−0.500	−2.321^***	−0.647^*	−1.147^***	−1.174^***	0.500	1.147^***
Pre‐vocational education (ref. = pre‐university)	1.150^*	2.078^***	1.445^**	−1.150^*	0.927^*	0.294	−2.078^***	−0.927^*	−0.633^*	−1.445^**	−0.294	0.633^*
Intermediate education (ref. = pre‐university)	0.309	1.132^*	0.499	−0.309	0.823	0.190	−1.132^*	−0.823	−0.633^*	−0.499	−0.190	0.633^*
Immigrant background (ref. = non‐immigrant)	−0.420	−0.172	0.100	0.420	0.248	0.520	0.172	−0.248	0.272	−0.100	−0.520	−0.272
Subjective well‐being
Life satisfaction	−0.556	−0.881^*	−1.349^***	0.556	−0.325	−0.793^*	0.881^*	0.325	−0.468	1.349^***	0.793^*	0.468
Self‐esteem	0.330	−0.243	0.638	−0.330	−0.573	0.309	0.243	0.573	0.881^**	−0.638	−0.309	−0.881^**
Self‐control
Attention deficit	0.509	1.048^*	1.050^**	−0.509	0.539	0.541	−1.048^*	−0.539	0.002	−1.050^**	−0.541	−0.002
Impulsivity	1.833^***	3.667^***	1.607^***	−1.833^***	1.834^***	−0.226	−3.667^***	−1.834^***	−2.060^***	−1.607^***	0.226	2.060^***
Social competencies
Perceived friendship competence	2.424^***	1.396^**	−0.210	−2.424^***	−1.028^*	−2.634^***	−1.396^**	1.028^*	−1.606^***	0.210	2.634^***	1.606^***

All estimates denote logit coefficients.

Abbreviations: c, class; Ref., reference category; SMU, social media use.

p < .05

^**

p < .01

^***

p < .001.