Table 4.

Performance measures for the themes of each subperiod

Subperiod	Name	PC	CC	AC	H	Name	PC	CC	AC	H
2008–2009	MANAGEMENT	17	3877	228.06	15	SOCIAL-NETWORKING	14	4745	338.93	12
	PROFILE	15	5849	389.93	14	VIRTUAL-COMMUNITY	10	924	92.4	10
2010–2011	TECHNOLOGY	103	10,982	106.62	52	MESSAGE	66	5550	84.09	36
	FACEBOOK	90	11,881	132.01	56	DATA-COLLECTION	41	4795	116.95	29
	ADOLESCENT	73	9214	126.22	49
2012–2013	FACEBOOK	300	20,660	68.87	78	EDUCATIONAL	96	5604	58.38	42
	PATIENT	189	8998	47.61	51	SURVEY-AND-QUESTIONNAIRE	94	5462	58.11	39
	MESSAGE	164	8881	54.15	56	PUBLIC-HEALTH	68	4733	69.6	34
	WEB-2	152	7177	47.22	46	CLINICAL	21	1173	55.86	16
	INTERVENTION	130	7888	60.68	48
2014–2015	FACEBOOK	611	19,125	31.3	65	SCHOOL	187	5516	29.5	39
	PATIENT	333	7117	21.37	42	PROGRAM	144	3263	22.66	33
	TWEET	280	9757	34.85	52	SOCIAL-NETWORK	114	3726	32.68	36
	TECHNOLOGY	247	6187	25.05	42	SOCIAL-MEDIA-USE	53	1258	23.74	22
	PUBLIC-HEALTH	201	6176	30.73	43	FEEDBACK	36	675	18.75	17
	WEB	194	4972	25.63	38	PEER	12	274	22.83	10
2016–2017	FACEBOOK	784	8101	10.33	34	PERCEPTION	199	1407	7.07	16
	PATIENT	502	4205	8.38	28	NETWORK	197	1920	9.75	22
	TWEET	342	3627	10.61	26	PREVALENCE	159	1473	9.26	18
	PROGRAM	318	2712	8.53	24	FEATURE	101	895	8.86	17
	YOUNG-ADULT	315	3289	10.44	26	PREVENTION	101	860	8.51	15
	MEDIA	286	2612	9.13	26	ACADEMIC	100	1225	12.25	18
	YOUTUBE	210	1515	7.21	17	TREND	21	276	13.14	10