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Table 1 Comparison of general and epidemiological data between the hand-foot-mouth disease (HFMD) and control groups

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
HFMD group 1094 634 1.68 ± 1.01 1.72 ± 0.76 442
Non-HFMD group 341 189 1.49 ± 0.88 1.51 ± 0.77 39
χ2/t   0.679 3.357 4.441 97.878
P   0.410 < 0.001 < 0.001 < 0.001