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Table 1 Descriptive statistics of the study sample number (%) and the mean (standard deviation)

From: The relationship between body mass index and uric acid: a study on Japanese adult twins

 

Men (n = 118)

Women (n = 280)

MZ (n, %)

102 (86.4 %)

262 (93.6 %)

DZ (n, %)

16 (13.6 %)

18 (6.4 %)

Age (year, mean ± SD)

64.10 ± 16.28

48.27 ± 17.10

BMI (kg/m2, mean ± SD)

23.14 ± 3.29

20.93 ± 2.47

UA (mg/dl, mean ± SD)

5.90 ± 1.18

4.49 ± 1.00

Creatinine (mg/dl, mean ± SD)

0.93 ± 0.12

0.69 ± 0.10

BHPI items

 Amount of sleep

  4 h or lessa (n, %)

3 (2.54 %)

9 (3.22 %)

  5–6 ha (n, %)

51 (43.22 %)

146 (52.14 %)

  7–8 h (n, %)

52 (44.07 %)

119 (42.50 %)

  9–10 ha (n, %)

12 (10.17 %)

6 (2.14 %)

  11 h or overa (n, %)

0 (0 %)

0 (0 %)

 Breakfast consumption

  Daily (n, %)

106 (89.03 %)

231 (82.50 %)

  Sometimes (n, %)

5 (4.24 %)

39 (13.93 %)

  Nevera (n, %)

7 (5.93 %)

10 (3.57 %)

 Nutrition balance

  Always careful (n, %)

67 (56.78 %)

165 (58.93 %)

  Nevera (n, %)

25 (21.19 %)

42 (15.00 %)

  No opinion (n, %)

26 (22.03 %)

73 (26.07 %)

Eating between meals

  Never (n, %)

36 (30.51 %)

30 (10.71 %)

  Rarely (n, %)

56 (47.46 %)

113 (40.36 %)

  Almost every daya (n, %)

26 (22.03 %)

137 (48.93 %)

 Alcohol consumption

  Never (n, %)

36 (30.51 %)

119 (42.50 %)

  Rarely (n, %)

39 (33.05 %)

133 (47.50 %)

  Every daya (n, %)

43 (36.44 %)

28 (10.00 %)

 Smoking status

  Non-smoking (n, %)

64 (54.24 %)

251 (89.64 %)

  Every daya (n, %)

21 (17.79 %)

11 (3.93 %)

  Smoking in the past (n, %)

33 (27.97 %)

18 (6.43 %)

 Exercise

  Regularly (n, %)

40 (33.90 %)

76 (27.14 %)

  Sporadically (n, %)

42 (35.59 %)

93 (33.21 %)

  Nevera (n, %)

36 (30.51 %)

111 (39.54 %)

  1. MZ monozygotic, DZ dizygotic, BMI body mass index, UA uric acid, BHPI Breslow’s Health Practice Index
  2. aBad lifestyle habits