Effectiveness of cognitive behavior therapy for sleep disturbance and glycemic control in persons with type 2 diabetes mellitus: A community-based randomized controlled trial in China

Table 3 Baseline characteristics between the completers and non-completers

Variable	Completers	Lost to follow-up					χ2/t value	P value
		Intervention group	Control group	χ2/t value	P value	Total
Participant number	1142	62	47	——	——	109	——	——
Gender (Female)	753	35	16	5.39	0.02	51	15.88	< 0.01
Age	62.44 (9.02)	62.95 (7.74)	62.23 (8.51)	0.46	0.65	62.64 (8.05)	-0.22	0.82
Educational level
High school and above	109	12	6	1.03	0.60	18	15.9	< 0.01
Junior high school	491	32	28			60
Elementary school and below	542	18	13			31
Hypertension	574	35	25	0.11	0.74	60	0.91	0.34
Comorbidities	227	18	8	2.12	0.15	26	0.75	0.32
BMI	25.02 (4.17)	24.77 (4.53)	24.43 (4.73)	0.75	0.46	24.62 (4.83)	0.94	0.35
Drinking	121	9	17	6.9	0.009	26	16.87	< 0.001
Smoking	172	16	23	6.22	0.01	39	30.46	< 0.001
Course of the disease (yr)	6.12 (4.98)	5.22 (4.53)	6.14 (5.17)	-1.001	0.32	5.62 (4.81)	1.004	0.32
Medication
Oral hypoglycemic agents	974	43	39	4.74	0.09	82	7.89	0.019
Insulin	94	8	6			14
Oral hypoglycemic agents plus insulin	74	11	2			13
GAD-7 score	6.75 (6.64)	7.31 (4.64)	7.53 (5.94)	-0.22	0.82	7.40 (5.22)	-0.99	0.32
PHQ-9 score	6.63 (5.24)	7.81 (5.39)	6.30 (4.94)	0.78	0.44	6.74 (5.19)	-0.21	0.83
PSQI score	9.45 (2.55)	9.83 (2.73)	9.51 (2.54)	0.64	0.52	9.35 (2.63)	0.39	0.70
HbA1c value	7.36 (1.14)	7.20 (1.31)	7.39 (1.45)	-0.7	0.48	7.28 (1.36)	0.69	0.49

Data presented as n or the mean (SD). BMI: Body mass index; GAD-7: General anxiety disorder; PHQ-9: Patient health questionnaire-9; PSQI: Pittsburgh Sleep Quality Index; HbA1c: Glycosylated hemoglobin.