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Table 1 Basic characteristics of the study participants, overall and by subgroups of gender

From: Validity of food and nutrient intakes assessed by a food frequency questionnaire among Chinese adults

Variable

Overall (n = 2325)

Subgroups

Male (n = 1126)

Female (n = 1199)

Age, years a

56.2 ± 14.9

57.2 ± 15.1

55.3 ± 14.8

Height, cm (n = 2226) a

159.9 ± 8.4

165.4 ± 6.7

154.8 ± 6.3

Weight, kg (n = 2226) a

60.1 ± 10.4

64.1 ± 10.4

56.3 ± 8.9

BMI(n = 2226) ab

23.4 ± 3.2

23.4 ± 3.2

23.5 ± 3.3

Nationality c

   

 Han

2,297 (98.8)

1,116 (99.1)

1,181 (98.5)

 Others

28 (1.2)

10 (0.9)

18 (1.5)

Education c

   

 Primary school and below

1,451 (62.4)

611 (54.3)

840 (70.1)

 Middle school

503 (21.6)

296 (26.3)

207 (17.3)

 High school

190 (8.2)

125 (11.1)

65 (5.4)

 College and above

181 (7.8)

94 (8.4)

87 (7.3)

Marital status c

   

 Unmarried

84 (3.6)

51 (4.5)

33 (2.8)

 Married

2,102 (90.4)

1,034 (91.8)

1,068 (89.1)

 Others

139 (6.0)

41 (3.6)

98 (8.2)

  1. a Values are presented as Mean ± SD
  2. b BMI was calculated as weight (kg)/height (m)2
  3. c Values in brackets are presented as %