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Table 5 Summary statistics of the gestational week (GW) related to a subset (Cluster 1: n=6; Cluster 2: n=8; Cluster 3: n=9) of hard clustered subjects (i.e. with membership score greater or equal than 0.7)

From: A hierarchical procedure to select intrauterine and extrauterine factors for methodological validation of preterm birth risk estimation

Cluster Min GW 1st Qu. GW Median GW Mean GW Sd GW 3rd Qu. GW Max GW
1 38.00 40.00 40.00 39.93 1.03 40.45 41.00
2 32.20 37.75 38.65 37.68 2.31 38.92 39.00
3 29.00 35.00 36.40 36.31 3.79 38.60 40.70
  1. We obtained the three clusters by fuzzy C-means on the risk factors selected by AIC