GA(No.)
|
Lung volume (cm3)
|
Thoracic volume (cm3)
|
Lung-to-thoracic volume ratio
|
---|
P2.5
|
P50
|
P97.5
|
\(\overline{x}\)
|
SD
|
P2.5
|
P50
|
P97.5
|
\(\overline{x}\)
|
SD
|
P2.5
|
P50
|
P97.5
|
\(\overline{x}\)
|
SD
|
---|
13(28)
|
1.75
|
2.72
|
3.85
|
2.79
|
0.61
|
4.03
|
6.24
|
9.04
|
6.50
|
1.43
|
0.416
|
0.430
|
0.445
|
0.430
|
0.008
|
14(30)
|
2.36
|
3.12
|
4.32
|
3.18
|
0.55
|
5.25
|
7.06
|
10.08
|
7.22
|
1.27
|
0.428
|
0.439
|
0.460
|
0.441
|
0.009
|
15(27)
|
2.64
|
3.67
|
4.74
|
3.72
|
0.54
|
5.91
|
8.15
|
10.69
|
8.26
|
1.17
|
0.436
|
0.451
|
0.468
|
0.451
|
0.008
|
16(29)
|
3.12
|
3.88
|
5.23
|
4.04
|
0.53
|
6.64
|
8.52
|
11.26
|
8.74
|
1.17
|
0.444
|
0.461
|
0.478
|
0.462
|
0.010
|
17(26)
|
3.83
|
4.81
|
6.25
|
4.82
|
0.57
|
8.24
|
10.08
|
13.04
|
10.18
|
1.18
|
0.458
|
0.474
|
0.486
|
0.473
|
0.008
|
18(34)
|
5.84
|
6.72
|
7.64
|
6.73
|
0.51
|
12.34
|
14.01
|
15.93
|
14.04
|
1.01
|
0.466
|
0.480
|
0.492
|
0.479
|
0.007
|
19(34)
|
6.83
|
8.83
|
11.34
|
9.13
|
1.11
|
14.25
|
18.20
|
23.15
|
18.90
|
2.32
|
0.471
|
0.483
|
0.498
|
0.483
|
0.006
|
20(36)
|
9.28
|
11.43
|
13.72
|
11.38
|
1.23
|
18.75
|
23.64
|
27.94
|
23.22
|
2.51
|
0.476
|
0.491
|
0.490
|
0.007
|
0.007
|
21(40)
|
11.16
|
13.59
|
15.49
|
13.54
|
1.07
|
22.32
|
27.04
|
31.54
|
27.10
|
2.16
|
0.489
|
0.500
|
0.518
|
0.500
|
0.008
|
22(47)
|
12.63
|
14.84
|
16.61
|
14.78
|
0.96
|
24.88
|
28.90
|
32.79
|
29.08
|
1.89
|
0.493
|
0.510
|
0.522
|
0.508
|
0.007
|
23(59)
|
15.07
|
17.37
|
19.38
|
17.29
|
1.34
|
29.08
|
33.86
|
37.76
|
33.65
|
2.61
|
0.501
|
0.514
|
0.528
|
0.514
|
0.005
|
24(62)
|
17.91
|
20.26
|
23.46
|
20.37
|
1.50
|
34.51
|
39.21
|
45.08
|
39.27
|
2.86
|
0.508
|
0.520
|
0.528
|
0.519
|
0.005
|
25(60)
|
21.03
|
23.41
|
25.49
|
23.41
|
1.24
|
39.78
|
44.87
|
48.49
|
44.63
|
2.40
|
0.513
|
0.525
|
0.534
|
0.525
|
0.005
|
26(55)
|
25.40
|
28.23
|
30.69
|
28.01
|
1.46
|
48.17
|
53.27
|
57.40
|
52.90
|
2.57
|
0.520
|
0.529
|
0.538
|
0.529
|
0.005
|
27(49)
|
27.76
|
31.13
|
33.96
|
30.96
|
1.44
|
51.93
|
58.36
|
63.23
|
58.01
|
2.72
|
0.524
|
0.535
|
0.542
|
0.534
|
0.005
|
28(47)
|
33.47
|
35.76
|
37.87
|
35.97
|
1.07
|
62.61
|
66.71
|
70.67
|
66.67
|
2.02
|
0.526
|
0.539
|
0.551
|
0.540
|
0.006
|
29(44)
|
37.18
|
40.40
|
43.59
|
40.43
|
1.53
|
68.52
|
74.16
|
80.26
|
74.02
|
2.60
|
0.532
|
0.548
|
0.564
|
0.546
|
0.007
|
30(43)
|
40.90
|
44.16
|
47.21
|
44.28
|
1.70
|
75.31
|
80.36
|
86.11
|
80.27
|
2.79
|
0.536
|
0.553
|
0.565
|
0.552
|
0.008
|
31(42)
|
45.15
|
48.38
|
51.52
|
48.33
|
1.85
|
82.21
|
87.35
|
92.52
|
87.09
|
3.00
|
0.537
|
0.555
|
0.566
|
0.555
|
0.006
|
32(41)
|
50.06
|
53.71
|
56.79
|
53.42
|
1.83
|
90.67
|
95.55
|
102.55
|
95.62
|
3.24
|
0.547
|
0.559
|
0.570
|
0.559
|
0.005
|
33(37)
|
54.33
|
59.72
|
62.85
|
59.53
|
2.07
|
96.84
|
105.50
|
112.56
|
105.70
|
3.99
|
0.552
|
0.563
|
0.574
|
0.563
|
0.005
|
34(35)
|
61.17
|
64.71
|
68.34
|
64.67
|
1.96
|
108.27
|
114.50
|
119.42
|
114.23
|
3.33
|
0.549
|
0.566
|
0.576
|
0.566
|
0.006
|
35(32)
|
66.38
|
71.49
|
75.62
|
71.17
|
2.11
|
116.17
|
125.30
|
133.37
|
124.85
|
3.88
|
0.557
|
0.570
|
0.580
|
0.570
|
0.005
|
36(31)
|
74.18
|
79.38
|
82.95
|
79.02
|
2.49
|
129.98
|
138.51
|
143.51
|
137.63
|
4.01
|
0.560
|
0.574
|
0.583
|
0.574
|
0.006
|
37(29)
|
80.42
|
84.62
|
88.64
|
84.69
|
2.40
|
138.66
|
146.40
|
153.01
|
146.53
|
4.33
|
0.563
|
0.579
|
0.585
|
0.578
|
0.005
|
38(27)
|
85.39
|
90.73
|
93.73
|
90.11
|
2.50
|
145.47
|
156.67
|
163.10
|
155.28
|
4.40
|
0.570
|
0.581
|
0.588
|
0.580
|
0.005
|
38(27)
|
91.03
|
94.84
|
98.21
|
94.74
|
1.96
|
156.14
|
162.09
|
168.53
|
161.82
|
3.44
|
0.577
|
0.585
|
0.595
|
0.585
|
0.003
|
40(26)
|
96.38
|
100.46
|
103.28
|
100.23
|
1.80
|
163.08
|
170.74
|
175.05
|
170.21
|
3.26
|
0.579
|
0.590
|
0.597
|
0.589
|
0.004
|
- GA gestational age, SD standard deviation