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Table 1 Characteristics of the study participants

From: Possible correlation between gut microbiota and immunity among healthy middle-aged and elderly people in southwest China

  Middle-aged group (50–59 years) Elderly group (≥ 60 years) P value
Age 54.13 ± 3.32 64.70 ± 3.93 0.000
n 67 81
Gender (male/female) 27/40 41/40
BMI (kg/m2) 23.41 ± 2.79 23.36 ± 2.75 0.906
IgA (g/L) 2.38 ± 0.99 2.59 ± 0.96 0.198
IgG (g/L) 13.97 ± 2.38 14.03 ± 2.20 0.873
IgM (g/L) 1.25 ± 0.45 1.16 ± 0.49 0.271
  1. Values are presented as mean ± SD or frequencies, tested for differences between the groups using t test