Table 1—

Data recorded for the 50 subjects in the study

Mean±SDMinimumMaximum
Ageyrs47.18±18.31783
Heightm1.66±0.091.491.87
PEFL·s−17.52±3.102.0714.23
PEFL·min−1451±186124854
PEFSR0.05±2.10−4.493.93
FEV1L2.93±1.340.625.87
FEV1SR−0.22±1.88−5.412.75
FVCL3.98±1.620.756.85
FVCSR0.60±1.91−5.523.98
RTms82.6±38.030218
DTms44.5±25.45141
  • PEF: peak expiratory flow

  • FEV1: forced expiratory volume in one second

  • FVC: forced vital capacity

  • RT: 10–90% rise time for PEF

  • DT: dwell time of PEF >90% of PEF

  • PEFSR, FEV1SR and FVCSR: deviation of PEF, FEV1 and FVC from their predicted values when expressed as standardized residuals 3