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Table 1 Median 25 hydroxyvitamin D level for the Calgary population studied, and the proportion of the population below levels representing the Institute Of Medicine’s[31] categories of vitamin adequacy: deficiency (<30 nmol/L), estimated average requirement (40 nmol/L) and recommended dietary allowance (50 nmol/L)

From: Association of vitamin D status with socio-demographic factors in Calgary, Alberta: an ecological study using Census Canada data

  Males Females
Median 25 hydroxyvitamin D level 65 71
Proportion of individuals <30 nmol/L 0.10 0.07
Proportion of individuals <40 nmol/L 0.19 0.15
Proportion of individuals <50 nmol/L 0.30 0.24