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Table 5 Comparison of general and epidemiological data between HFMD group and Non-HFMD groups in training set and test set

From: A clinical scoring system for pediatric hand-foot-mouth disease

   Number of patients Number of male patients Illness duration (days) Age (years) Number of patients with positive exposure history
Training set HFMD group 764 433 1.48 ± 0.89 1.72 ± 0.76 315
  Non-HFMD group 240 130 1.65 ± 1.01 1.49 ± 0.76 28
  χ2 / t   0.47 2.52 4.12 70.97
  P   0.495 0.012 <.0001 <.0001
Testing set HFMD group 330 201 1.50 ± 0.86 1.71 ± 0.77 127
  Non-HFMD group 101 59 1.75 ± 1.02 1.55 ± 0.80 11
  χ2 / t   0.2 2.50 1.88 27.05
  P   0.654 0.013 <.0001 <.0001