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Table 1: Demographic and risk factors  
Symptoms P Value
No Yes
Sex 
 Female 159 299 .5
 Male 123 209 
Age (mean value in years) 69.1 (SD, 12) 70.1 (SD, 13) .68
Hypertension 
 No 110 177 .25
 Yes 172 331 
Smoking status 
 <2 years 66 143 .26
 >2 years 56 105
 No 160 260 
CAD 
 No 231 407 .54
 Yes 51 101 
Diabetes 
 No 207 383 .54
 Yes 75 125 
Hyperlipidemia 
 No 101 116 <.001^{^a}
 Yes 181 392 
Note:—CAD indicates coronary artery disease.
↵a Significant.

	Symptoms		P Value
	No	Yes	P Value
Sex
Female	159	299	.5
Male	123	209
Age (mean value in years)	69.1 (SD, 12)	70.1 (SD, 13)	.68
Hypertension
No	110	177	.25
Yes	172	331
Smoking status
<2 years	66	143	.26
>2 years	56	105	.26
No	160	260
CAD
No	231	407	.54
Yes	51	101
Diabetes
No	207	383	.54
Yes	75	125
Hyperlipidemia
No	101	116	<.001^{^a}
Yes	181	392