. 2019 Apr 4;26(7):655–666. doi: 10.1093/jamia/ocz019

Table 2.

Results for personal, behavioral, environmental outcomes, dysmenorrhea, and PMS-related variables

	Experimental Group (n = 30)					Control Group (n = 31)
	Baseline	4 wk	8 wk	12 wk	16 wk	Baseline	4 wk	8 wk	12 wk	16 wk	App Effect	Time Effect	Interaction Effect (App × Time)
App self-efficacy	20.13	19.57	18.63	20.20	20.13	20.16	19.10	18.52	18.97	19.52	1.028	0.738	0.136
App self-efficacy	20.13	19.57	18.63	20.20	20.13	20.16	19.10	18.52	18.97	19.52	(.311)	(.567)	(.969)
App quality rating	58.38	64.67	—	—	65.70	54.27	60.78	—	—	58.84	16.232	10.070	0.663
App quality rating	(n = 21)	64.67	—	—	65.70	(n = 22)	60.78	—	—	58.84	(<.01^a)	(<.01^a)	(.517)
Overall satisfaction	3.43	3.97	3.93	3.87	3.93	3.41	3.58	3.68	3.42	3.68	8.999	2.263	0.575
Overall satisfaction	(n = 21)	3.97	3.93	3.87	3.93	(n = 22)	3.58	3.68	3.42	3.68	(.003^a)	(.063)	(.681)
App outcome expectancy	11.17	10.93	11.03	11.23	11.80	10.74	10.61	10.35	10.74	10.94	4.749	0.838	0.144
App outcome expectancy	11.17	10.93	11.03	11.23	11.80	10.74	10.61	10.35	10.74	10.94	(.030^a)	(.502)	(.966)
Used menu	1.86	2.53	2.93	3.17	3.33	1.36	2.74	2.94	3.10	2.90	1.145	12.588	0.807
Used menu	(n = 21)	2.53	2.93	3.17	3.33	(n = 22)	2.74	2.94	3.10	2.90	(.286)	(<.01*)	(.522)
Number of days with records	—	5.67	7.13	7.27	7.10	—	3.58	3.81	3.87	3.35	16.686	0.305	0.223
Number of days with records	—	5.67	7.13	7.27	7.10	—	3.58	3.81	3.87	3.35	(<.01^a)	(.822)	(.881)
App social influence	11.43	11.30	12.03	12.83	12.90	10.55	11.06	11.48	12.06	11.29	4.242	1.930	0.338
App social influence	11.43	11.30	12.03	12.83	12.90	10.55	11.06	11.48	12.06	11.29	(.040^a)	(.105)	(.825)
Intent to recommend	2.81	3.47	3.27	3.47	3.50	2.86	3.06	2.94	2.74	3.03	10.974	1.682	1.104
Intent to recommend	2.81	3.47	3.27	3.47	3.50	2.86	3.06	2.94	2.74	3.03	(<.01^a)	(.154)	(.355)
First day of menstruation	5.53	5.50	5.33	5.57	5.77	5.74	5.51	5.83	5.71	5.45	0.233	0.043	0.334
First day of menstruation	5.53	5.50	5.33	5.57	5.77	5.74	5.51	5.83	5.71	5.45	(.629)	(.996)	(.855)
Second day of menstruation	4.90	5.20	4.60	4.63	4.50	4.55	4.68	4.45	5.06	4.90	0.022	0.300	0.578
Second day of menstruation	4.90	5.20	4.60	4.63	4.50	4.55	4.68	4.45	5.06	4.90	(.883)	(.878)	(.679)
Possibility of behavioral and cognitive changes in Dysmenorrhea management	15.67	20.60	21.57	22.10	22.43	15.41	20.23	20.06	19.61	21.19	5.330	15.782	0.642
	(n = 21)	20.60	21.57	22.10	22.43	(n = 22)	20.23	20.06	19.61	21.19	(.022^a)	(<.01^a)	(.633)
Number of dysmenorrhea relief methods	2.20	2.27	2.47	2.53	2.80	2.06	2.41	2.25	2.13	2.45	2.352	1.631	0.632
Number of dysmenorrhea relief methods	2.20	2.27	2.47	2.53	2.80	2.06	2.41	2.25	2.13	2.45	(.126)	(.166)	(.640)
PMS score	30.40	32.27	31.83	32.93	32.40	30.39	30.16	29.84	30.13	30.71	2.405	0.156	0.171
PMS score	30.40	32.27	31.83	32.93	32.40	30.39	30.16	29.84	30.13	30.71	(.122)	(.960)	(.953)
Possibility of behavioral and cognitive changes in PMS management	15.90	21.73	22.60	22.97	23.10	13.72	20.83	19.97	19.94	21.13	14.680	19.090	0.454
	(n = 21)	21.73	22.60	22.97	23.10	(n = 22)	20.83	19.97	19.94	21.13	(<.01^a)	(<.01^a)	(.769)

P values are presented in parentheses.

PMS: premenstrual syndrome.

P < .05.