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Table 1 Descriptive statistics of the participants that signed up to the reproducibility and validation study (n = 29)

From: Reproducibility and relative validity of a newly developed web-based food-frequency questionnaire for assessment of preconception diet

  Study population Women Men
Number of participants, n (%) 29 (100) 21 (72) 8 (28)
Median age, y 23 (22, 27) 24 (22, 28) 23 (22, 24)
Median height, cm 170 (164, 178) 167 (161, 170) 183 (178, 193)
Median weight, kg 68 (64, 80) 66 (62, 70) 87 (68, 100)
Median BMI, kg/m2 24.1 (21.7, 25.8) 24.1 (21.5, 25.5) 24.6 (22.0, 26.1)
Education, n (%)
- High School 6 (21) 5 (24) 1 (12)
- Vocational education 3 (10) 3 (14) 0 (0)
- University/college up to 4 years 11 (38) 5 (24) 6 (75)
- University/college more than 4 years 9 (31) 8 (38) 1 (12)
  1. Presented as frequency (percentage) and median (inter quartile range reported as the 25th percentile, 75th percentile). BMI Body mass index