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Table 3 The Jaccard similarity coefficient of PTB classification between each pair of the method

From: Comparison of first trimester dating methods for gestational age estimation and their implication on preterm birth classification in a North Indian cohort

Formula LMP Hadlock McLennan-Schluter Robinson-Fleming Sahota Verburg INTERGROWTH-21st Garbhini-GA1
LMP 1.00 0.49 0.50 0.50 0.52 0.53 0.53 0.50
Hadlock   1.00 0.90 0.88 0.88 0.81 0.80 0.77
McLennan-Schluter    1.00 0.98 0.83 0.82 0.80 0.69
Robinson-Fleming     1.00 0.82 0.81 0.79 0.68
Sahota      1.00 0.92 0.89 0.83
Verburg       1.00 0.87 0.83
INTERGROWTH-21st        1.00 0.87
Garbhini-GA1         1.00