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Table 1 Demographic characteristics of participants by sex

From: Validity of an online 24-h recall tool (myfood24) for dietary assessment in population studies: comparison with biomarkers and standard interviews

  Men (n = 85)a Women (n = 127)a
Mean age (years) (SD) 43 (15) 44(16)
Ethnicity
 White 63 (74%) 92 (72%)
 Black 1 (1%) 9 (7%)
 Asian 5 (6%) 8 (6%)
 Mixed and other 15 (18%) 14 (11%)
Age left education
 16 or under 13 (15%) 11 (9%)
 17 to 18 23 (27%) 36 (28%)
 19+ 49 (58%) 78 (61%)
Smoking status
 Non-smoker 65 (76%) 99 (78%)
 Smoker 12 (14%) 13 (10%)
Mean weight (kg) (SD) 81 (13) 67 (13)
Mean body mass index (kg/m2) (SD) 26 (4) 25 (5)
  1. aNote, where numbers in each category do not sum to the totals for the column, it is due to incomplete data for that characteristic
  2. SD standard deviation