Non-constipated students (N = 554)

Constipated students(N = 256)

p

Regular eating breakfast

0.134

None/seldom

77 (17.2)

36 (14.1)

Regular

59 (13.1)

51 (20.0)

usual/daily

313 (69.7)

168 (65.9)

Eating late-night snack

0.001

None/seldom

228 (51.1)

109 (41.6)

Regular

153 (34.3)

80 (31.4)

Usual/daily

65 (14.6)

60 (7.0)

Eating snack

<0.001

None/seldom

193 (43.1)

62 (28.5)

Regular

162 (36.2)

95 (37.1)

Usual/daily

91 (20.4)

67 (34.4)

Eating fried food

0.002

None/seldom

165 (37.0)

65 (27.0)

Regular

214 (47.9)

121 (47.3)

Usual/daily

63 (15.2)

57 (25.8)

Eating drink with sugar

0.012

None/seldom

101 (22.6)

52 (20.4)

Regular

159 (35.5)

70 (27.5)

Usual/daily

143 (41.9)

97 (52.1)

Daily drink over 1500 mL water

0.173

None/seldom

135 (30.0)

83 (37.0)

Regular

154 (34.2)

89 (34.6)

Usual/daily

113 (35.8)

50 (25.4)

Eating fast food

0.007

None/seldom

242 (53.9)

99 (41.8)

Regular

170 (37.9)

113 (44.5)

Usual/daily

37 (8.2)

31 (13.8)

Junk food used as regular food

<0.001

None/seldom

262 (58.6)

90 (41.7)

Regular

145 (32.4)

107 (42.5)

Usual/daily

39 (8.7)

34 (15.9)