Table 1 Descriptive characteristics according to rs9939609 polymorphism (FTO gene) at baseline and in the follow-up

Sex

 Male

58 (43.6)

74 (43.8)

24 (45.3)

0.977^a

N/A

N/A

N/A

N/A

 Female

75 (56.4)

95 (56.2)

29 (54.7)

N/A

N/A

N/A

Skin color

 White

102 (76.7)

137 (81.1)

43 (81.1)

0.612^a

N/A

N/A

N/A

N/A

 Other

31 (23.3)

32 (18.9)

10 (18.9)

N/A

N/A

N/A

School region

 Urban

81 (60.9)

84 (49.7)

26 (49.1)

0.115 ^a

82 (61.7)

83 (49.1)

25 (47.2)

0.057^a

 Rural

52 (39.1)

85 (50.3)

27 (50.9)

51 (38.3)

86 (50.9)

28 (52.8)

School network

 Municipal

61 (45.9)

73 (43.2)

27 (50.9)

0.607^a

57 (42.9)

67 (39.6)

25 (47.2)

0.605^a

 State

72 (54.1)

96 (56.8)

26 (49.1)

76 (57.1)

102 (60.4)

28 (52.8)

 Anthropometric

Median

(Q1; Q3)

p

Median

(Q1; Q3)

p

 Body mass index (kg/m²)

18.0

(15.9; 21.4)

18.5

(16.7; 21.4)

17.7

(15.8; 20.2)

0.112^b

20.4

(18.0; 23.1)

20.5

(18.5; 23.8)

20.3

(17.1; 22.3)

0.357^b

 Body fat percentage (%)

21.6

(16.4; 27.5)

21.9

(17.5; 27.5)

20.0

(15.6; 25.7)

0.274^b

20.2

(16.4; 26.0)

20.5

(14.6; 27.0)

21.2

(14.2; 24.7)

0.782^b

 Waist circumference (cm)

60.3

(55.5; 70.0)

63.0

(58.0; 69.8)

62.0

(55.0; 68.0)

0.099^b

68.0

(62.0; 74.2)

69.0

(63.3; 77.0)

68.9

(61.2; 73.7)

0.297^b