a decreasing trendp = 0.246
During the pre-intervention period, a trend in time-to-isolation nearly plateaued (1.0 h/month; 95% CI − 1.7, 3.7; p = 0.462), whereas a significant decrease in time-to-isolation (− 41.9 h; 95% CI − 82.2, − 1.7; p = 0.041) at the intervention point was observed, and a decreasing trend (− 0.6 h/month; 95% CI − 1.7, 0.5; p = 0.246) was maintained during the post-intervention period in the unadjusted segmented regression analysis.