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Table 3 Seasonal variation of serum 25-hydroxyvitaminin D (25-OHD) in 266 patients from one general practice in Canberra

From: Clinical audit of health promotion of vitamin D in one general practice

   

Number

Season

n

Mean 25-OHD

level (nmol/l)

< 51 nmol/l

51-79 nmol/l

80+ nmol/l

Autumn

91

66.1

28

42

21

Winter

38

54.7

20

11

7

Spring

54

53.8

29

18

7

Summer

83

73.7

12

38

33