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. 2017 Jan 17;73(3):232–241. doi: 10.1016/j.mjafi.2016.12.008

Table 2.

Descriptive statistics for MCA PI with respect to gestational age (weeks).

Gestational age (weeks) Min Max Average SD 5th percentile Quartile 1 (25%) Quartile 2 (50%) Quartile 3 (75%) 95th percentile
18 1.54 2.11 1.74 0.17 1.58 1.61 1.68 1.89 1.98
19 1.53 2.01 1.76 0.11 1.60 1.68 1.78 1.84 1.94
20 1.41 2.07 1.77 0.13 1.55 1.70 1.81 1.84 1.92
21 1.53 2.12 1.83 0.12 1.63 1.80 1.86 1.91 1.96
22 1.50 2.24 1.84 0.16 1.63 1.75 1.86 1.93 2.06
23 1.64 2.38 1.93 0.15 1.68 1.82 1.93 2.04 2.11
24 1.52 2.26 1.97 0.17 1.68 1.86 1.98 2.12 2.19
25 1.78 2.21 2.00 0.12 1.80 1.94 2.02 2.10 2.16
26 1.61 2.23 1.99 0.16 1.64 1.91 2.05 2.10 2.16
27 1.74 2.32 2.05 0.15 1.83 1.95 2.00 2.18 2.24
28 1.81 2.39 2.09 0.15 1.84 2.01 2.09 2.19 2.32
29 1.64 2.36 2.04 0.15 1.79 1.96 2.02 2.16 2.31
30 1.65 2.31 2.00 0.16 1.80 1.88 2.00 2.12 2.28
31 1.61 2.28 2.01 0.15 1.78 1.90 2.05 2.14 2.20
32 1.64 2.24 1.96 0.14 1.80 1.86 1.96 2.09 2.14
33 1.51 2.10 1.80 0.13 1.62 1.70 1.81 1.88 2.00
34 1.44 2.10 1.76 0.14 1.54 1.64 1.81 1.85 1.93
35 1.43 1.93 1.72 0.14 1.49 1.62 1.75 1.82 1.91
36 1.18 1.82 1.61 0.15 1.39 1.55 1.62 1.69 1.80
37 0.63 1.73 1.51 0.20 1.32 1.44 1.57 1.62 1.69
38 1.10 1.65 1.30 0.16 1.10 1.20 1.30 1.39 1.61
39 1.10 1.40 1.21 0.09 1.12 1.14 1.20 1.28 1.36
40 0.95 1.31 1.22 0.10 1.11 1.16 1.23 1.29 1.31