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Table 4 Correlation of gut microbiota and immune indices: correlation of gut microbiota and T cell levels

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

  Middle-aged group Elderly group
CD3 +  CD4+ % CD8+ % CD4+/CD8+ CD3+ CD4+ % CD8+ % CD4+/CD8+
Phylum
 Actinobacteria 0.149 0.098 − 0.186 0.126 0.000 0.010 0.039 − 0.014
 Bacteroidetes − 0.175 − 0.200 0.254* − 0.244* − 0.058 − 0.107 0.135 − 0.120
 Firmicutes 0.124 − 0.239 0.156 − 0.186 0.137 − 0.045 0.005 − 0.022
 Proteobacteria 0.158 − 0.016 − 0.052 0.032 − 0.059 0.088 0.000 0.039
 Verrucomicrobia − 0.052 0.173 − 0.174 0.179 0.086 − 0.288* 0.197* − 0.299*
 Bacteroidetes/Firmicutes − 0.215 − 0.171 0.220 − 0.205 0.026 0.113 − 0.004 0.053
Richness/diversity
 Chao − 0.145 − 0.084 0.122 − 0.130 0.176 − 0.203 0.128 − 0.166
 Observed Species − 0.206 − 0.125 0.163 − 0.169 0.212 − 0.186 0.121 − 0.153
 Shannon − 0.159 − 0.194 0.230 − 0.236 0.087 − 0.092 − 0.007 − 0.031
 Simpson 0.138 0.221 − 0.248* 0.260* − 0.032 0.044 0.054 − 0.018
  1. The Spearman’s correlation coefficient was calculated between gut microbiota and T cell levels. * and ** significant difference at a P value of < 0.05 and < 0.01, respectively