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Table 1 Summary statistics and prevalence data.

From: Vitamin status and cognitive function in a long-term care population

Vitamin B12 (pmol/L)  
  Total (n = 75)
   Mean (SD) 301.7 (167.8)
   Median 245.0
   Range 81.0–982.0
   95% CI 263.1–340.3
   <148 5 (6.7%)
   148–221 26 (34.7%)
Erythrocyte folate (nmol/L)  
   Mean (SD) 942.9 (367.9)
   Median 868.0
   Range 316.0–2857.0
   95% CI 858.3–1027.5
   <370 1 (1.3%)
Vitamin B 6 (nmol/L)  
   Mean (SD) 54.3 (21.4)
   Median 48.0
   Range 28.0–125.0
   95% CI 49.4–59.2
   ≤30 4 (5.3%)
Hcy (μmol/L)  
   Mean (SD) 13.5 (6.2)
   Median 12.5
   Range 4.6–48.3
   95% CI 12.1–14.9
   >13.3 31 (41.3%)
Niacin Number  
   Mean (SD) 161.3 (81.6)
   Median 140.3
   Range 33.4–390.5
   95% CI 142.5–180.1
   Niacin Ratio ≤1 20 (26.7%)