Table 1: Demographic, clinical and angiographic characteristics of the sample (n=113)

Characteristics N (%)	Sample (n=113) N (%)	PCI (n=73) N (%)	OMT (n=40) N (%)	p-value
Age-group
<65	64 (57)	46 (63)	18 (45)	0.07
≥65	49 (43)	27 (37)	22 (55)
Gender
Male	77 (68)	51 (70)	26 (65)	0.60
Female	36 (32)	22 (30)	14 (35)
Weight status
Normal	49 (43)	30 (41)	19 (48)	0.51
Overweight/Obesity	64 (57)	43 (59)	21 (53)
Marital status
Single/separated/divorced/widowed	23 (20)	16 (22)	7 (18)	0.58
Married	90 (80)	57 (78)	33 (83)
Educational level
Junior high school or lower	53 (47)	31 (43)	22 (55)	0.20
Senior high school or higher	60 (53)	42 (58)	18 (45)
Place of residence
Inside HCM city	95 (84)	65 (89)	30 (75)	0.05
Outside HCM city	18 (16)	8 (11)	10 (25)	0.05
Working status
No working	66 (58)	37 (51)	29 (73)	0.02
Currently working	47 (42)	36 (49)	11 (28)	0.02
Household economic
Poor	17 (15)	10 (14)	7 (18)	0.59
Non-poor	96 (85)	63 (86)	33 (83)	0.59
Health insurance
No	8 (7)	2 (3)	6 (15)	0.02^a
Yes	105 (93)	71 (97)	34 (85)	0.02^a
Smoking
No	96 (85)	64 (88)	32 (80)	0.28
Yes	17 (15)	9 (12)	8 (20)	0.28
Drinking alcohol
No	101 (89)	65 (89)	36 (90)	0.87
Yes	12 (11)	8 (11)	4 (10)	0.87
Physical activity
No	51 (45)	32 (44)	19 (48)	0.71
Yes	62 (55)	41 (56)	21 (53)	0.71
Co-morbidity
No	15 (13)	10 (14)	5 (13)	0.86
Yes	98 (87)	63 (86)	35 (88)	0.86
History of myocardial infarction
No	104 (92)	68 (93)	36 (90)	0.72^a
Yes	9 (8)	5 (7)	4 (10)	0.72^a
History of brain stroke
No	106 (94)	71 (97)	35 (88)	0.10^a
Yes	7 (6)	2 (3)	5 (13)	0.10^a
Family history of cardiovascular disease
No	101 (89)	63 (86)	38 (95)	0.21^a
Yes	12 (11)	10 (14)	2 (5)	0.21^a
Type of ACS
UA/NSTEMI	56 (50)	25 (34)	31 (78)	<0.01
STEMI	57 (50)	48 (66)	9 (23)	<0.01
Duration of treatment in months (Mean ± SD)	9.4 ± 2.3	9.3 ± 2.2	9.7 ± 2.4	0.37^b
The number of damaged vessels
1	27 (24)	13 (18)	14 (35)	0.02
2	33 (29)	27 (37)	6 (15)
3	53 (47)	33 (45)	20 (20)
LVEF
<40%	16 (14)	9 (12)	7 (18)	0.35
40-50%	15 (13)	12 (16)	3 (8)
>50%	82 (73)	52 (71)	30 (75)

PCI: percutaneous coronary intervention; OMT: Optimal medical therapy; ACS: acute coronary syndromes; UA/NSTEMI: unstable angina/non-ST elevation myocardial infarction; STEMI: ST elevation myocardial infarction; LVEF: Left Ventricular Ejection Fraction; SD: Standard deviation.
Co-morbidity was yes if patient had one of the following diseases including hypertension, dyslipidemia, diabetes, chronic kidney disease, chronic liver disease or chronic lung disease
Chi-square test used except otherwise stated
Fisher exact test
The two-sample t-test with equal variances