Table 7. Differential associations of genera.

Smallest five adjusted two-sided randomization-based p-values for 10,000 permutations of the intervention assignment following a matched-pair design.

Air pollution
Genus-genus associations (-: disappearance after intervention)	p-valueadj
Succinivibrio/Slackia (-)	0.0661
Ruminiclostridium/Cloacibacillus (-)	0.1063
Cloacibacillus/Lachnospiraceae-FCS020-group	0.2795
Megasphaera/Alistipes	0.4147
Bacteroidales (Genus: unknown)/Prevotella-2	0.4753
Smoking
Genus-genus associations (-: disappearance after intervention)	p-valueadj
Christensenellaceae-R-7/Ruminiclostridium-6 (-)	0.1585
Ruminococcaceae-UCG-010/Ruminiclostridium-6 (-)	0.1585
Ruminococcaceae-UCG-014/Flavonifractor	0.2031
Clostridiales-vadinBB60/Ruminiclostridium-6	0.2376
Ruminococcaceae-UCG-013/Faecalibacterium	0.2492