Table 3

25(OH)D status in population studies of adults (15+) in the order of latitude.

Location

Latitude

Method

N

Population representation (subjects per capita)

Vitamin D (nmol/L), mean and/or range

Deficiency

% <25 nmol/L

Insufficiency

% <50 nmol/L


summer

winter

summer

winter

summer

winter


New Zealand [30]

35–47S

RIA Diasorin

2946

1:1,400

67

44

0–10

48

Japan [31]

35 N

RIA Disaorin

197

1:647,000

79

38

ND

ND

1

87

US [32]

25–47 N

RIA Disaorin

18462*

1:16,200

62–90

60–79

1–3

1–5

8–34

13–40

Italy [14]

40 N

RIA Disaorin

90

1:645,000

84

43

2 **

18 **

4

70

Switzerland [33]

46–47 N

CPB Amersham

3276

1:2,300

ND

50 †

ND

6 †

ND

34–95 †

France [7]

43–51 N

RIA Incstar

1569

1:39,000

ND

61 (43–94)

ND

14 **

ND

75 ***

Germany [29]

49 N

RIA Incstar

415

1:199,000

67–70

40–45

~5 ††

30–40

ND

ND

Belgium [18]

50 N

ChL Diasorin

126

1:82,000

ND

48

ND

ND

ND

34 †††

Estonia

59 N

RIA Disaorin

367

1:3,600

59

44

<1

8

29

73

Finland [26]

60 N

RIA Incstar

328

1:16,000

ND

46

ND

26–28

ND

56–86 ***


* Two different seasonal sub-populations; ** level of <30 nmol/L used to define deficiency; *** own specific cut-off for insufficiency (based on PTH curve) was used; † data from October to June (no summer months); †† no official data in paper (calculated from a figure); ††† level of <37.5 nmol/L was defined as insufficient; ND – no data.

Kull et al. BMC Public Health 2009 9:22   doi:10.1186/1471-2458-9-22

Open Data