Table 3.

Means and SDs of classification variables for gamer (n=3970) profiles and nongamers (n=8755).^a,b,c

	Adaptive computer gamers	Maladaptive computer gamers	Maladaptive phone gamers	Unknown device gamers	Casual computer gamers	Casual phone gamers	Nongamers
Computer gaming, mean (SD)	4.00d (0.00)	4.00d (0.00)	0.00e (0.00)	0.00e (0.00)	3.00 (0.00)	1.53 (0.50)	N/Af
Phone gaming, mean (SD)	1.46g,h (1.21)	2.42i (0.99)	2.54i (0.93)	1.53g,j (1.30)	1.42h,j (1.17)	1.82 (1.10)	N/A
GASk, mean (SD)	2.60 (0.70)	4.43 (0.40)	3.56 (0.58)	1.49 (0.55)	2.45 (0.78)	2.31 (0.86)	N/A
WEMWBSl, mean (SD)	45.70m (11.30)	37.80n (12.60)	35.60n (11.10)	41.70m,o (10.90)	44.60p (11.30)	41.90o (11.10)	44.50p (10.70)

^aNongamers include participants who reported playing games for <3.5 hours a day.

^bThe information on missing data regarding classification variables per profile is presented in Table S6 in Multimedia Appendix 1.

^cMeans that do not share the same superscript letters are significantly different (P<.001).

^dP=.99.

^eP=.99.

^fN/A: not applicable.

^gP=.28.

^hP=.46.

ⁱP=.48.

^jP=.13.

^kGAS: Game Addiction Scale.

^lWEMWBS: Warwick-Edinburgh Mental Well-being Scale.

^mP=.02.

ⁿP=.16.

^oP=.81.

^pP=.89.