Table 2

Jaeger rapid thoracoabdominal compression (RVRTC) prediction equations

Jaeger
FEV0.5
 MEmbedded Image
 L1
 S0.1296
FVC
 MEmbedded Image
 L1
 SEmbedded Image
FEV0.5/FVC
 Mexp(0.0977−0.0942 × LN(Age)−0.0285×Sex)
 L2.380
 Sexp(−3.4316+0.3038 × LN(Age))
FEF25–75
 Mexp(7.8253−114.29/Length−0.064 × Sex)
 L0.672005
 S0.2027
FEF75
 Mexp(7.5205–131.29/Length−0.0662 × Sex)
 L1
 S0.2417
  • These reference equations are only valid for subjects between 4 and 118 weeks of age, and 54–92 cm in length. Age, age in weeks; L, lambda (skewness); length, length in cm; LN, natural logarithm; M, µ (median); S, sigma (coefficient of variation); sex, girl=0 and boy=1.