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. 2015 Feb 27;7(3):719–727. doi: 10.3390/toxins7030719

Table 1.

Serum total calcium and phosphorous concentration values estimated by different methods.

Min Max Mean SD N R R2 St. Error of Estimate
Ca_Lab (mmol/L) 2.15 2.95 2.54 0.21 83
Ca_Opt (mmol/L) 2.22 2.95 2.53 0.19 83 0.90 0.81 0.093
P_Lab (mmol/L) 0.42 2.85 1.08 0.51 142
P_Opt (mmol/L) 0.38 2.76 1.08 0.48 142 0.93 0.87 0.182

Values from the laboratory and estimated by the optical method were compared using paired Student t-test; the values are not statistically different (p = 0.5).