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Table 3 Number of subjects and cumulative days of URTI during intervention period

From: Efficacy of heat-killed Lactococcus lactis JCM 5805 on immunity and fatigue during consecutive high intensity exercise in male athletes: a randomized, placebo-controlled, double-blinded trial

   Symptom positive Symptom negative p valuea
Number of subjects (n) Placebo 13 11 0.768
LC-Plasma 13 13  
Number of incidences (days) Placebo 56 256 0.028
LC-Plasmab 39 299  
  1. Comparison of the cumulative number of subjects and days of URTI
  2. aFor each subjects and incidences were compared between the placebo and LC-Plasma groups by Chi-square test
  3. bThe adjusted residual of the LC-Plasma group (symptom negative) was calculated as 2.3