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Table 2 Age in years for pubertal growth estimates

From: Insight into human pubertal growth by applying the QEPS growth model

Variable N Mean Median SD Max Min
Girls:
Onset of puberty
AgeTonset, age at minimum height velocity of the T-functiona 1129 9.24 9.19 1.01 12.62 6.37
AgeP1, age at 1% of the P-functionb 1139 8.71 8.68 0.98 12.00 6.09
AgeP5, age at 5% of the P-function 1139 9.86 9.81 0.97 13.13 7.30
Mid puberty
AgePHV, age at visual estimated PHV 1134 11.92 11.88 0.97 15.31 9.35
AgeTPHV, age at PHV of the T-function 1129 11.83 11.80 0.96 15.09 9.39
AgePPHV, age at PHV of the P-function 1139 12.02 11.98 0.95 15.26 9.51
AgeP50, age at 50% of the P-function 1139 12.09 12.06 0.95 15.34 9.59
End of puberty
AgeP95, age at 95% of the P-function 1139 14.66 14.65 0.95 17.93 12.23
AgeP99, age at 99% of the P-function 1139 16.33 16.34 0.95 19.63 13.91
AgeTend, age where the height velocity
has decreased to 1 cm/year
1139 15.01 15.03 0.84 18.00 12.85
Duration
 Duration between AgeP5 and AgeP95 1139 4.80 4.78 0.21 5.54 3.44
 Duration between AgeP1 and AgeP99 1139 7.61 7.58 0.33 8.77 5.45
 Duration between Tonset and Tend 1129 5.77 5.78 0.50 7.11 3.84
Boys:
Onset of puberty
AgeTonset, age at minimum height
velocity of the T-function
1141 10.74 10.71 0.98 14.20 7.50
AgeP1, age at 1% of the P-function 1141 10.73 10.72 0.97 13.94 7.45
AgeP5, age at 5% of the P-function 1141 11.78 11.77 0.96 14.98 8.56
Mid puberty
AgePHV, age at visual estimated PHV 1136 13.83 13.81 1.00 17.18 10.95
AgeTPHV, age at PHV of the T-function 1141 13.66 13.65 0.96 16.84 10.54
AgePPHV, age at PHV of the P-function 1141 13.73 13.72 0.96 16.94 10.63
AgeP50, age at 50% of the P-function 1141 13.80 13.78 0.96 17.01 10.69
End of puberty       
AgeP95, age at 95% of the P-function 1141 16.10 16.06 0.97 19.31 13.12
AgeP99, age at 99% of the P-function 1141 17.56 17.52 0.98 20.78 14.58
AgeTend, age where the height
velocity has decreased to 1 cm/year
1141 16.68 16.64 0.90 19.44 14.01
Duration
 Duration between AgeP5 and AgeP95 1141 4.32 4.31 0.22 5.55 3.24
 Duration between AgeP1 and AgeP99 1141 6.83 6.82 0.34 8.78 5.12
 Duration between Tonset and Tend 1141 5.94 5.94 0.38 7.62 4.37
  1. aTotal height function in cm; T(age) = Q(age) + E(age) + P(age) – S(age), bQuadratic logistic function describing the pubertal growth spurt P(age) in cm