Table 1.

Demographic and lifestyle characteristics of study population

Variable	BMI category
	<18.5	18.5–24.9	25–29.9	≥30
	n (%)	n (%)	n (%)	n (%)
Age:
20–39	7 (22.6)	18 (58.1)	3 (9.7)	3 (9.7)
40–59	-	6 (40.0)	7 (46.7)	2 (13.3)
> 60	-	3 (20.0)	6 (40.0)	6 (40.0)
Gender:
Male	2 (13.3)	7 (46.7)	2 (13.3)	4 (26.7)
Female	5 (10.9)	20 (43.5)	14 (30.4)	7 (15.2)
Tobacco smoking:
Never smoker	5 (21.7)	9 (39.1)	8 (34.8)	1 (4.3)
< 30 pack- years	2 (6.7)	15 (50.0)	6 (20.0)	7 (23.3)
≥ 30 pack- years	-	3 (37.5)	2 (25.0)	3 (37.5)
Physical activity:
Sedentary (PAL 1.0–1.39)	1 (14.3)	2 (28.6)	2 (28.6)	2 (28.6)
Low active (PAL 1.4–1.59)	1 (9.1)	2 (18.2)	3 (27.3)	5 (45.5)
Active (PAL 1.6–1.89)	4 (12.5)	18 (56.3)	8 (25.0)	2 (6.3)
Very active (PAL 1.9–2.5)	1 (9.1)	5 (45.5)	3 (27.3)	2 (18.2)
Total	7 (11.5)	27 (44.3)	16 (26.2)	11 (18.0)

PAL physical activity level (a ratio of total energy expenditure to basal energy expenditure [33])