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Table 2 Fitting parameters and R2 values corresponding to the curves shown in Figures 2, 3, 4, 5, 6 with reference to the three PUN classes U 1, (U 1 + H 1) and (U 1 + F 1)

From: A novel approach to the analysis of human growth

   U1 U1 + H1 U1 + F1
Boys (1965) y0(cm) 69.67 66.71 65.06
  a0(1/yr) 0.12 0.14 0.16
  β0(1/yr) -0.1 −0.14 −0.17
  t m (yr)   13.51 12.75
  y1(cm)   10.03 17.76
  β1(1/yr)   −0.53 −0.59
  σ(yr)    2.00
  R 2 0.995 0.998 0.999
Girls (1990) y0(cm) 64.14 62.91 60.65
  a0(1/yr) 0.15 0.1672 0.21
  β0(1/yr) −0.15 −0.1696 −0.25
  t m (yr)   9.3377 9.37
  y1(cm)   4.3249 17.99
  β1(1/yr)   −0.1838 −0.38
  σ(yr)    3.21
  R 2 0.995 0.997 0.999
Noonan boys y0(cm) 67.58 65.34 62.22
  a0(1/yr) 0.09 0.1 0.13
  β0(1/yr) −0.07 −0.1 −0.15
  t m (yr)   11 12.83
  y1(cm)   2.81 15.57
  β1(1/yr)   −0.08 −0.43
  σ(yr)    2.29
  R 2 0.995 0.994 0.998
Noonan girls y0(cm) 60.02 58.4 57.56
  a0(1/yr) 0.12 0.14 0.15
  β0(1/yr) −0.12 −0.15 −0.16
  t m (yr)   12 11.79
  y1(cm)   5.83 9.26
  β1(1/yr)   −0.67 −0.93
  σ(yr)    1.28
  R 2 0.995 0.998 0.998