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Table 5 Crowding measurements during peak hours (noon to 8 pm) of the study periods

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

mNEDOCS measurements Pre-intervention period n = 7335 Intervention period n = 7335 Odds ratio (95% CI) p valuea
Median mNEDOCS (IQR)* 74 (56–94) 54 (38–71) 0.97 (0.97–0.97) < 0.001
Crowding (mNEDOCS > 100) n (%) 1367 (18.6) 260 (3.5) 0.16 (0.14–0.18) < 0.001
mNEDOCS categories n (%)
 0–20, not busy 111 (1.5) 500 (6.8) 4.80 (3.87–5.86) < 0.001
 21–60, busy 2150 (29.3) 3969 (54.1) 2.84 (2.66–3.04) < 0.001
 61–100, extremely busy 3707 (50.5) 2606 (35.5) 0.54 (0.51–0.58) < 0.001
 101–140, crowded 1226 (16.7) 257 (3.5) 0.18 (0.16–0.21) < 0.001
 141–180, severely crowded 138 (1.9) 3 (0.0) 0.02 (0.01–0.07) < 0.001
  > 180, disaster 3 (0.0) 0 (0.0) 0.50 (0.49–0.51) 0.248
  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