approached significanceP = 0.055
The Holm-Šidák significance between results for infected and control groups increased with time; differences were not significant at 0 and 5 min ( P = 0.14 and 0.13), they approached significance at 10 min ( P = 0.055), and they were significantly different ( P < 0.001) at 15 min, reflecting greater conversions of CO to CODH with time.