TABLE 1:

Tracheal rings growth pattern

Age in months
1234567912
Area cm2: mean, 95% CI, medianC20.34
0.20 to 0.48
0.33
0.91
0.79 to 1.03
0.93
1.24
1.05 to 1.42
1.22
1.61
1.38 to 1.84
1.57
1.96
1.67 to 2.25
2
2.20
1.86 to 2.53
2.14
2.57
2.14 to 2.99
2.38
2.66
2.18 to 3.15
2.59
2.75
2.35 to 3.15
2.49
C30.29
0.23 to 0.35
0.3
0.85
0.71 to 0.97
0.83
1.15
0.96 to 1.35
1.09
1.58
1.32 to 1.84
1.58
1.87
1.52 to 2.20
1.74
2.01
1.65 to 2.37
1.96
2.38
1.91 to 2.84
2.33
2.64
2.07 to 3.2
2.34
3.04
2.49 to 3.57
3.19
C40.24
0.18 to 0.29
0.25
0.74
0.62 to 0.86
0.67
1.04
0.85 to 1.21
0.91
1.46
1.22 to 1.71
1.39
1.71
1.36 to 2.06
1.6
1.92
1.57 to 2.25
2.05
2.30
1.85 to 2.74
2.13
2.63
2.01 to 3.24
2.26
3.01
2.57 to 3.45
3.08
C50.22
0.18 to 0.25
0.22
0.69
0.59 to 0.79
0.65
0.98
0.79 to 1.16
0.91
1.38
1.14 to 1.6
1.32
1.57
1.26 to 1.87
1.48
1.73
1.42 to 2.02
1.71
2.08
1.66 to 2.48
1.97
2.36
1.90 to 2.80
2.07
2.72
2.25 to 3.17
2.77
C60.20
0.17 to 0.22
0.21
0.65
0.53 to 0.76
0.63
0.93
0.73 to 1.13
0.83
1.29
1.04 to 1.53
1.19
1.43
1.12 to 1.73
1.30
1.48
1.19 to 1.77
1.39
1.83
1.45 to 2.20
1.74
2.05
1.68 to 2.41
1.85
2.46
2.03 to 2.88
2.54
C70.18
0.15 to 0.21
0.20
0.61
0.50 to 0.72
0.57
0.87
0.66 to 1.06
0.71
1.23
0.99 to 1.46
1.19
1.25
0.94 to 1.55
1.06
1.35
1.04 to 1.64
1.23
1.60
1.18 to 201
1.41
1.90
1.39 to 2.40
1.61
2.34
1.86 to 2.80
2.39
T10.19
0.15 to 0.22
0.19
0.61
0.50 to 0.71
.58
0.86
0.67 to 1.03
0.71
1.19
0.97 to 1.39
1.13
1.25
1.01 to 1.48
1.17
1.29
1.03 to 1.54
1.18
1.58
1.20 to 1.95
1.58
1.77
1.25 to 2.29
1.48
2.09
1.68 to 2.5
2.02
T20.20
0.15 to 0.23
0.21
0.64
0.52 to 0.75
0.6
0.87
0.68 to 1.05
0.81
1.20
0.94 to 1.44
1.12
1.28
1.09 to 1.45
1.27
1.40
1.18 to 1.61
1.36
1.63
1.25 to 2.01
1.51
1.78
1.26 to 2.29
1.46
2.00
1.62 to 2.37
1.88
T30.21
0.16 to 0.24
0.21
0.65
0.54 to 0.75
0.59
0.88
0.70 to 1.06
0.85
1.21
0.99 to 1.42
1.09
1.26
1.11 to 1.4
1.26
1.42
1.23 to 1.60
1.39
1.66
1.25 to 2.06
1.51
1.88
1.37 to 2.37
1.68
1.97
1.61 to 2.31
1.79
T40.22
0.17 to 0.27
0.20
0.69
0.58 to 0.79
0.61
0.91
0.74 to 1.07
0.88
1.21
1.02 to 1.39
1.14
1.29
1.15 to 1.42
1.24
1.43
1.24 to 1.61
1.46
1.66
1.26 to 2.05
1.56
1.95
1.45 to 2.45
1.76
1.97
1.63 to 2.3
1.86
T50.24
1.16 to 0.32
0.22
0.76
0.59 to 0.92
0.68
1.02
0.76 to 1.26
0.95
1.30
1.07 to 1.52
1.21
1.33
1.23 to 1.43
1.29
1.52
1.31 to 1.72
1.46
1.85
1.43 to 2.26
1.72
2.11
1.66 to 2.56
1.85
2.05
1.73 to 2.37
1.92
  • Differences between the means and the age in months were noticed (Greenhouse-Geisser test F=124.346, P=0.000) as well as a linear trend between the means (F=256.520, P=0.000). Shaded areas show the highest and lowest values of each month.