Table 1.

Summaries of baseline variables in the three groups (N = 96).

		Baduanjin	Basketball	Control
Age		19.21 ± 1.02	18.95 ± 0.89	19.71 ± 1.77
Gender	Male	24	23	24
	Female	7	8	10
Grade	Freshmen	29	30	28
	Sophomore	2	1	5
	Junior	0	0	1
Major∗	Science	24	22	34
	Social science	7	9	0
Family	Single child	22	16	22
	Sibling	9	15	12
Class role	Leader	10	4	10
	Nonleader	21	27	24
Dating	Yes	6	5	11
	No	25	26	23
Monthly mobile phone fee (Yuan)	<20	1	2	5
	20–50	12	17	14
	51–100	6	6	9
	101–150	3	0	1
	150–200	9	6	5
Daily mobile phone use (hours)	3-4	0	5	2
	4–6	1	2	4
	6–8	23	18	19
	8–10	3	5	8
	>10	4	1	1
Main use of mobile phone	Social (chatting)	13	16	16
	Study and work	14	13	16
	Personality	0	2	0
	Entertainment	4	0	1
	Killing time	0	0	1
Main social use of mobile phone	Internet surfing	16	14	15
	Movie and music	12	14	18
	Phone and messaging	1	0	0
	Photograph	2	3	0
	Playing game	0	0	1
Awareness of harm of mobile radiation	Know	26	23	30
	Do not know	5	8	4

Note. ^∗A significant baseline difference, which was added to the analysis models as the main effect terms to adjust for their potential confounding effects.