Table 3.

Summary statistics of PTHrP values in all subjects and stratified by three age groups: 1–5 years; 6–12 years; 13–18 years.

Measurements	PTHrP (1–5 Years) ng/mL	PTHrP (6–12 Years) ng/mL	PTHrP (13–18 Years) ng/mL
Sample size	40	78	60
Lowest value	0.38	0.44	0.34
Highest value	3.66	3.12	3.23
Arithmetic mean	1.59	1.31	1.25
Median	1.35	1.08	0.99
Standard deviation	0.91	0.66	0.72
Kolmogorov-Smirnov test for normal distribution	reject Normality (p = 0.0044)	reject Normality (p < 0.0001)	reject Normality (p = 0.0003)