Towards objective measurements of habitual dietary intake patterns: comparing NMR metabolomics and food frequency questionnaire data in a population-based cohort

Table 1 General characteristics of study participants in the Västerbotten Intervention Programme

Variable	Women (n = 932)	Men (n = 963)	All (n = 1,895)
Age (y) %
40	28.1	15.4	21.6
50	36.5	42.3	39.4
60	35.4	42.4	38.9
BMI (kg/m²) %
18.5–25.0	51.0	34.3	42.5
>25.0–30.0	37.9	52.0	45.1
>30.0	11.2	13.7	12.5
Physical activity¹%
Inactive	16.0	16.4	16.2
Moderately inactive	26.4	31.0	28.8
Moderately active	27.4	29.4	28.4
Active	29.8	22.8	26.3
Missing	0.4	0.4	0.4
Level of education %
Basic level, 9 years	16.4	21.3	18.9
High school	49.2	58.5	53.9
University	34.4	20.2	27.2
Smoking %
Current smoker	17.2	15.1	16.2
Former smoker	33.2	36.2	34.6
Never smoker	49.6	48.7	49.2

¹Physical activity was measured by combining two questions about occupational and leisure time physical activity into the validated Cambridge Index of Physical Activity [27]
BMI, body mass index

ISSN: 1475-2891