Skip to main content

Table 2 Daily intake of constipated subjects and normal participant

From: Association of niacin intake with constipation in adult: result from the National Health and Nutrition Examination

Characteristic

Normal, N = 3907 (78%)a

Constipation, N = 1270 (22%)a

P-valueb

Niacin

< 0.001

 Q2 (18–27)

40,507,351 (26%)

11,510,966 (26%)

 

 Q1 (0–18)

28,026,902 (18%)

12,353,301 (28%)

 

 Q3 (27–39)

40,069,460 (26%)

10,367,768 (23%)

 

 Q4 (> 39)

46,134,085 (30%)

10,488,205 (23%)

 

Energy

2024 (1548, 2608)

1815 (1437, 2305)

< 0.001

Protein

79 (60, 103)

71 (55, 91)

< 0.001

Carbohydrate

245 (187, 311)

227 (176, 291)

0.006

Total sugars

104 (68, 148)

98 (68, 136)

0.041

Fiber

16 (11, 22)

15 (11, 22)

0.3

Total fat

74 (53, 101)

66 (48, 88)

0.002

Cholesterol

240 (155, 368)

211 (142, 345)

0.001

Moisture

3950 (2704, 5752)

3649 (2602, 5554)

0.014

Total saturated fatty acids

24 (16, 34)

21 (15, 30)

0.002

Total monounsaturated fatty acids

26 (19, 36)

23 (17, 32)

0.001

Total polyunsaturated fatty acids

16 (11, 23)

15 (10, 21)

0.010

Folic acid

224 (119, 496)

192 (94, 469)

0.015

Vitamin E

6.9 (4.7, 9.9)

6.3 (4.3, 9.3)

0.022

Phosphorus

1346 (1038, 1759)

1238 (954, 1585)

0.001

Sodium

3406 (2566, 4426)

3072 (2333, 3925)

 < 0.001

Potassium

2703 (2065, 3445)

2524 (1885, 3247)

0.003

Caffeine

128 (42, 251)

102 (32, 214)

0.005

  1. an (%); median (IQR)
  2. bChi-squared test with Rao and Scott’s second-order correction; Wilcoxon rank-sum test for complex survey samples