Determination of Coverage Interval of Antioxidant Vitamins (Vitamin C & Vitamin E) in Plasma and Serum of Bengali Population

Table 2

Distribution of reference values of vitamin C.

Number of observations (𝑛)	71
Distribution of reference values (mg/dL)
Mean	0.65
Median	0.6
95% CI (confidence interval)	0.65 ± 0.05
Test for normal distribution
Kolmogorov Smirnov^a test. 𝑃	0.006^#
Non parametric Coverage interval	0.35–1.2 mg/dL
Kolmogorov Smirnov test after; logarithmic transformation. 𝑃	0.2*
Parametric coverage interval	0.32–1.17 mg/dL

#The distribution is not in normal distribution as 𝑃<0.05.
∗This is a lower bound true significance 𝑃>0.05.
aRefers to in statistics, the Lilliefors test.