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Table 6 Overall (24/7) crowding measurements during the study periods

From: The impact of a multimodal intervention on emergency department crowding and patient flow

mNEDOCS measurements Pre-intervention period n = 21,989 Intervention period n = 21,989 Odds ratio (95% CI) p valuea
Median mNEDOCS (IQR)* 41 (10–70) 28 (8–51) 0.99 (0.99–0.99) < 0.001
Crowding (mNEDOCS > 100) n (%) 1688 (7.7) 292 (1.3) 0.16 (0.14–0.18) < 0.001
mNEDOCS categories n (%)
 0–20, not busy 7354 (33.4) 8930 (40.6) 1.36 (1.31–1.42) < 0.001
 21–60, busy 7413 (33.7) 9369 (42.6) 1.46 (1.40–1.52) < 0.001
 61–100, extremely busy 5534 (25.2) 3398 (15.5) 0.54 (0.52–0.57) < 0.001
 101–140, crowded 1525 (6.9) 288 (1.3) 0.18 (0.16–0.20) < 0.001
 141–180, severely crowded 159 (0.7) 4 (0.0) 0.03 (0.01–0.07) < 0.001
  > 180, disaster 4 (0.0) 0 0.50 (0.50–0.51) 0.125
  1. *Abbreviation: IQR interquartile range
  2. ap values were calculated using χ2 tests, except for median mNEDOCS, which was calculated using the Mann-Whitney U test, and disaster, which was calculated using the Fisher exact test