Vitamin D and Health

Table 26: UK - by month blood sample taken, adults and children by age (1.5 y and over)
National Diet and Nutrition Survey: years 1-4 combined (2008/09-2011/12)
Plasma 25-hydoxyvitamin D*
Age group (years)
1.5-3 a 4-10 11-18 19-64 65+
January-March 1,b
Mean 37.2 31.5 34.8 40.5
Median 32.9 28.1 29.4 36.7
SD 17.56 18.77 22.91 22.91
% below 25 nmol/L 31.4 40.0 39.3 29.3
April-June 2,b
Mean [47.2] 43.5 44.2 44.9
Median [48.9] 41.2 40.4 38.2
SD [18.60] 19.27 24.39 21.89
% below 25 nmol/L [8.2] 12.7 24.4 21.3
July-September 3,b
Mean 66.0 52.3 57.5 50.5
Median 60.8 50.3 56.3 48.7
SD 22.66 21.39 23.42 18.31
% below 25 nmol/L 1.7 13.4 8.4 3.6
October-December 4,b
Mean 50.2 44.3 45.6 43.7
Median 52.9 37.3 41.0 42.6
SD 23.14 26.62 22.73 19.94
% below 25 nmol/L 11.7 24.3 16.9 25.7
Bases (unweighted)
1
January-March [12] 68 125 345 106
2
April-June [8] [48] 152 369 85
3
July-September [8] 59 136 341 75
4 October-December [14] 62 110 266 72
* 0.0% represents no cases in this dataset.
a
b
Due to cell sizes for those aged 1.5 to 3 years being below 30, data has not been presented for children aged
1.5 to 3 years.
Due to limited cell sizes, the 2.5th and 97.5th percentiles have not been presented.
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