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Table 2 Comparison of gut microbiota at genus level

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

Genus Middle-aged group (%) Elderly group (%) P value
Akkermansia 2.02 3.49 0.099
Bacteroides 16.96 12.89 0.490
Bifidobacterium 3.94 6.20 0.332
Blautia 3.08 2.76 0.795
Clostridium 2.69 2.64 0.639
Coprococcus 1.51 2.25 0.003*
Desulfovibrio 0.45 0.28 0.181
Dialister 0.65 1.73 0.538
Dorea 0.93 1.10 0.775
Escherichia 6.65 7.59 0.464
Eubacterium 0.80 0.40 0.835
Faecalibacterium 16.56 12.99 0.109
Haemophilus 0.28 0.90 0.114
Lachnospira 0.37 0.58 0.058
Lactobacillus 0.51 0.17 0.500
Megamonas 4.06 0.90 0.720
Oscillospira 0.83 0.99 0.867
Parabacteroides 0.51 1.05 0.780
Phascolarctobacterium 1.88 0.83 0.436
Prevotella 2.94 3.17 0.371
Roseburia 4.02 5.08 0.279
Ruminococcus 5.15 5.89 0.708
SMB53 1.08 0.66 0.742
Streptococcus 2.02 3.14 0.226
Sutterella 1.06 0.72 0.840
Veillonella 0.43 1.19 0.095
Unclassified 16.04 18.24 0.608
Others (< 0.5%) 2.58 2.20 0.901
  1. Genera with the relative abundance of more than 0.5% are presented as mean and compared between the middle-aged and elderly groups using Wilcoxon rank-sum test. The lower abundant genera are grouped as ‘Others’. * indicates significant difference at a P value of < 0.05. At the genus level, only the presence of species belonging to the genus Coprococcus was significantly higher in the elderly group