Table III.
Studies from northern Europe on D3 levels (nmol/l) in the population sorted according to northern latitude
| Study | Year | Area | Latitude | Season (month) | Number | Age | D3 mean total | D3 mean women | D3 mean men | Insufficient (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| Kozlow (22) | 2009–2012 | N Russia | 66–67N | Complete year | 188 | 18–60 | 31–50 | 34–58 | ||
| Brustad (6) | 2002 | N Norway | 65–71N | Mo 11–5 | 443 | 44–59 | 57 | 38 | ||
| This study | 2009 | N Sweden | 63–69N | Mo 1–4 | 1,622 | 25–74 | 68 | 71 | 65 | 20.1 |
| Sigurdsson (15) | 1998 | Iceland | 64N | Mo 09–06 | 308 | 70 | 53 | 13 | ||
| Larose (12) | 1995–1997 | Mid Norway | 64N | 2,505 | 19–55 | 59 | 59 | 58 | 40 | |
| Standahl Olsen (RW.ERROR – unable to find reference: 1,040) | 2005 | Norway | 58–70N | Mo 4–8 | 372 | 48–62 | 42 | 77 | ||
| Burgaz (9) | 2006 | Mid Sweden | 60N | Mo 1–3 | 116 | 61–86 | 69 | 18 | ||
| Deleskog (33) | 1992–1998 | Stockholm | 60N | Complete year | 2,022 | 35–56 | 57 | 61 | ||
| Lamberg-Allardt (8) | 1998 | S Finland | 60N | Mo 2–3 | 328 | 31–43 | 47 | 45 | ||
| Littorin (13) | 1987–1988 | Sweden | 55–69N | 208 | 25 | 97 | 100 | 93 | ||
| Landin-Wilhelmsen (20) | 1984 | Gothenburg | 57N | Mo 3–11 | 382 | 25–64 | 73 | 66 | 52.2 | |
| Macdonald (32) | 2006 | Scotland | 57N | Complete year | 377 | 55–70 | 28 | 76 | ||
| Thuesen (7) | 1999–2001 | Denmark | 56N | Complete year | 6,146 | 30–60 | 48 | |||
| Shirazi (14) | 1991–1996 | Malmö | 55N | Complete year | 727 | 41–73 | 88 | |||
| Gerdhem (11) | 1996–1999 | Malmö | 55N | Complete year | 986 | 75 | 95 | 4 |