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 *** |