Table 1.

Comparison of baseline data between the two groups

Factor	Control group (n=71)	Observation group (n=60)	P value
Age			0.375
≥ 65 years old	53	41
< 65 years old	18	19
Gender			0.385
Male	46	35
Female	25	25
BMI			0.496
≥ 25 kg/m2	18	12
< 25 kg/m2	53	48
Marital status			0.417
Married	44	33
Divorced	27	27
Academic degree			0.728
≥ Junior high school	40	36
< Junior high school	31	24
Smoking history			0.385
Yes	46	35
No	25	25
Alcoholism history			0.209
Yes	9	12
No	62	48
Past medical history
Hypertension	21	15	0.524
Diabetes mellitus	13	14	0.398

Note: BMI: Body mass index.