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Table 1 Characteristics of emergency department visits (numbers and percentages) by patients aged 65–84 years vs. 85 years and over, 2005 and 2010

From: Emergency department use by oldest-old patients from 2005 to 2010 in a Swiss university hospital

  2005    2010    Z-Test 2005/2010 P value
  65–84 years 85+ years Chi2 P value 65-84 years 85+ years Chi2 P value 65–84 years 85+ years
ED visits a   6,327 (76.9%) 1,901 (23.1%) * 7,618 (73.3%) 2,772 (26.7%) * * *
Sex Male 3,004 (47.5%) 602 (31.7%) * 3,858 (50.6%) 963 (34.7%) * *  
  Female 3,323 (52.5%) 1,299 (68.3%) 3,760 (49.4%) 1,809 (65.3%) *  
Marital status Married 2,965 (46.9%) 432 (22.7%) * 3,858 (50.6%) 796 (28.7%) * * *
  Other b 3,362 (53.1%) 1,469 (77.3%) 3,760 (49.4%) 1,976 (71.3%) * *
Residence Home 5,634 (89.2%) 1,582 (83.3%) * 6,714 (88.2%) 2,262 (81.6%) *   
  Nursing home 237 (3.8%) 228 (12.0%) 328 (4.3%) 370 (13.5%)   
  Transfer c 445 (7.1%) 90 (4.7%) 572 (7.5%) 139 (5.0%)   
Triage level d <= 15 min 2,828 (44.7%) 841 (44.2%)   3,427 (45.4%) 1,078 (44.1%)    
  > 15 min 3,499 (55.3%) 1,060 (55.8%) 4,113 (54.6%) 1,369 (55.9%)   
Reason for ED Cardiovasc. conditions 1,245 (19.7%) 344 (18.1%) * 1,431 (19.0%) 389 (15.9%) *   
visit d,e Trauma 1,052 (16.6%) 497 (26.1%) 1,173 (15.6%) 583 (23.8%)   
  Respiratory conditions 829 (13.1%) / / / / /
Disposition Hospital admission c 3,871 (62.4%) 1,254 (68.4%) * 4,478 (58.8%) 1,935 (69.8%) * *  
  Home discharge 2,127 (34.3%) 407 (22.2%) 2,893 (38.0%) 608 (21.9%) *  
  Nursing home discharge 153 (2.6%) 145 (7.9%) 192 (2.5%) 198 (7.2%)   
  In-ED death 56 (0.9%) 29 (1.6%) 53 (0.7%) 30 (1.1%)   
Length of ED stay Mean ± SD 12 h 58 m (±13.1) 14 h 46 m (±13.1) *f 12 h 12 m (±12.8) 15 h 56 m (±14.8) *f * *
(hours and minutes) Median 6 h 52 mh 8 h 51 mh 6 h 37 mh 9 h 13 mh *g *g
Return to ED within 30 days after ED Discharge from ED to home/nursing home 230 (3.6%) 51 (2.7%)   383 (5.0%) 95 (3.4%) *   
discharge Discharge after hospital admission 220 (3.5%) 63 (3.3%) 284 (3.7%) 118 (4.3%)   
  No return 5,877 (92.9%) 1,787 (94.0%) 6,951 (91.2%) 2,559 (92.3%) * *
  1. Legend:
  2. * P Value < 0.05.
  3. aED Emergency Department.
  4. bSingle, widowed, divorced, separated, unknown.
  5. cAcute care, psychiatric and rehabilitation hospital.
  6. d2009 instead of 2010.
  7. eThe three most common reasons for ED visit according to age group and year.
  8. fZ-Test comparison of means.
  9. gWilcoxon rank sum test.
  10. hSmall differences with median length of ED stay reported in the survival analyses are due to censored stays (in-ED death and ED stays over 48 hours).