References | Sample size | GA at birth | PMA at assessment (weeks) | Viral identification | Lung function test results | |||

Young et al6 | 253 | Term | 45 | RSV (n=2) | Bronchiolitis (n=10) | Control (n=236) | p Value | |

T_{me}/T_{E} (%) | 30.4 (3.5) | 33.7 (0.10) | NS | |||||

Rrs (cm H_{2}O/l/s) | 60 (5) | 56 (10) | NS | |||||

Crs (ml/cm H_{2}O/kg) | 1.4 (0.1) | 1.4 (0.03) | NS | |||||

Martinez et al7 | 124 | Term | 48 | Virology not reported | LRTI with wheeze (n=24) | No LRTI (n=88) | p Value | |

T_{me}/T_{E} (%) | 25.4 (6.9) | 31.2 (9.2) | 0.01 | |||||

Conductance (l/s/cm H_{2}O) | 0.028 (0.006) | 0.035 (0.009) | 0.04 | |||||

FRC He (ml) | 97.1 (20.8) | 103.2 (16.7) | 0.63 | |||||

V_{max} FRC (ml/s) | 118.6 (51.2) | 131.2 (47.9) | 0.50 | |||||

Broughton et al9 | 39 | 28 | 36 | RSV (n=15) | RSV LRTI (n=15) | No RSV LRTI (n=24) | p Value | |

Rrs (cm H_{2}O/l/s) | 126 (62) | 89 (28) | 0.01 | |||||

Crs (ml/cm H_{2}O/kg) | 1.0 (0.5) | 1.0 (0.5) | 0.82 | |||||

FRC He (ml/kg) | 22 (4) | 22 (3) | 0.94 |

Data are demonstrated as mean (SD).

Crs, compliance of the respiratory system; FRC, functional residual capacity; GA, gestational age; He, helium dilution; NS, non-significant; Rrs, resistance of the respiratory system; RSV, respiratory syncitial virus: T

_{me}/T_{E}, the time to maximal expiratory flow as a proportion of total expiratory time.