. 2016 Aug 1;6:30820. doi: 10.1038/srep30820

Table 1. Sociodemographics, irisin and activity levels.

		HC normal-weight (n = 49)	Obesity (n = 21)	Morbid-Obesity (n = 44)	Statistic	p
Academic level; %	Primary	8.2%	70.6%	61.9%	χ²_(df:4) = 43.65	<0.001
	Secondary	38.8%	23.5%	31.0%
	University	53.1%	5.9%	7.1%
Education (years);	Range	9 to 20	7 to 20	0 to 20	F_(df:3;110) = 35.33	<0.001
Education (years);	Mean (SD)	18.47 (2.52)	11.76 (3.82)	13.00 (4.70)	F_(df:3;110) = 35.33	<0.001
Age (years);	Range	19 to 46	26 to 68	22 to 63	F_(df:3;110) = 42.31	<0.001
Age (years);	Mean (SD)	29.04 (6.22)	49.19 (11.69)	42.25 (10.84)	F_(df:3;110) = 42.31	<0.001
BMI (kg/m²);	Range	18.97 to 24.61	30.79 to 39.11	40.35 to 59.52	F_(df:3;110) = 624.4	<0.001
BMI (kg/m²);	Mean (SD)	21.61 (1.54)	35.52 (2.40)	46.32 (4.91)	F_(df:3;110) = 624.4	<0.001
Body-fat (%);	Range	18 to 35	34 to 50	38 to 53	F_(df:3;110) = 287.3	<0.001
Body-fat (%);	Mean (SD)	26.57 (4.50)	41.41 (3.84)	46.55 (3.66)	F_(df:3;110) = 287.3	<0.001
Irisin (ng/ml);	Range	60.5 to 171.7	92.3 to 176.0	68.7 to 219.8	F_(df:3;110) = 20.86	<0.001
Irisin (ng/ml);	Mean (SD)	104.00 (24.32)	122.38 (23.63)	141.40 (32.96)	F_(df:3;110) = 20.86	<0.001
Activity: MVPA;	Range	14.0 to 154.2	9.0 to 151.5	3.7 to 126.8	F_(df:3;110) = 5.04	0.008
Activity: MVPA;	Mean (SD)	71.37 (34.09)	54.47 (43.82)	47.40 (34.15)	F_(df:3;110) = 5.04	0.008

BMI: Body mass index. SD: standard deviation.