Overall PTB<37 Overall PTB<37 ≥37w ≥37w OR (95%CI) Spontaneous (sPTB) <37 Spontaneous (sPTB) <37 Spontaneous (sPTB) <37 ≥37w ≥37w OR (95%CI) Spontaneous (sPTB) <34 Spontaneous (sPTB) <34 ≥34w ≥34w OR (95%CI)
n or Mean % or ±SD n or Mean % or ±SD n or Mean % or ±SD n or Mean n or Mean % or ±SD n or Mean % or ±SD n or Mean % or ±SD
GA at measurement (days) GA at measurement (days) 145.9 ±8.8 146 ±8.8 146 146 ±8.8 144.6 ±8.6 146.0 ±8.8
CL at measurement (mm) CL at measurement (mm)
≤10mm 11 2.4 7 0.3 11.17(4.37 - 30.55) 8 3.6 7 7 0.3 17.98 (6.37 - 51.90) 7 8.9 9 (0.3 44.9(15.45 - 125.87)
10 - ≤15mm 9 1.9 10 0.4 6.4 (2.53 - 15.99) 6 2.7 10 10 0.4 9.44(3.17 - 25.76) 3 3.8 13 0.4 13.32 (2.98 - 43.09)
15 - ≤20mm 15 3.3 32 1.2 3.33 (1.74 - 6.11) 9 4.0 32 32 1.2 4.42 (1.96 - 9.06) 6 7.7 40 1.3 8.66 (3.17 - 20.09)
20 - ≤25mm 38 8.4 106 3.9 2.55 (1.71 - 3.72) 20 8.9 106 106 3.9 2.97 (1.75 - 4.82) 10 12.8 124 4.2 4.66 (2.17 - 9.09)
25 - ≤30mm 46 10.2 156 5.8 2.10 (1.47 - 2.95) 29 13.0 156 156 5.8 2.92 (1.87 - 4.43) 7 8.9 192 6.4 2.10 (0.86 - 4.44)
> 30mm 334 73.7 2375 88.4 151 67.7 2375 2375 88.4 45 57.7 2598 87.3
Funneling at measurement (yes) Funneling at measurement (yes) 46 10.2 59 2.2 5.03 (3.36 - 7.49) 30 13.5 59 59 2.2 6.92(4.31 - 10.92) 17 21.8 79 2.6 10.22 (5.57 - 17.95)
Sludge at measurement (yes) Sludge at measurement (yes) 33 7.3 59 2.2 3.50 (2.24 - 5.39) 18 8.1 59 59 2.2 3.91 (2.20 - 6.62) 10 12.8 76 2.5 5.61 (2.63 - 10.86)