Table 1

Characteristics of included cases

CharacteristicsTotal (n=492)
Age, mean years (SD)79.1 (6.7)
Sex
 Male, n (%)230 (46.7)
 Female, n (%)262 (53.3)
ED referral
 By physician or ambulance, n (%)349 (70.9)
 By patient self, n (%)143 (29.1)
Urgency classification
 High urgency*, n (%)253 (51.4)
 Low urgency†, n (%)237 (48.2)
 Unknown, n (%)2 (0.4)
Time of ED arrival
 Office hours‡, n (%)324 (65.9)
 Out of hours§, n (%)168 (34.1)
ED attendance
 Weekdays, n (%)361 (73.4)
 Weekend¶, n (%)131 (26.6)
Polypharmacy**
 No, n (%)106 (21.5)
 Yes, n (%)386 (78.5)
 CCI, mean (SD)5.96 (2.2)
 ED length of stay, mean minutes (SD)223.5 (96.8)
Marital status
 Partner/spouse, n (%)228 (46.3)
 Single, n (%)196 (39.8)
 Unknown, n (%)68 (13.8)
Informal care at home, (%)
 No, n (%)280 (56.9)
 Yes, n (%)212 (43.1)
Specialties involved in the ED, (%)
 1, n (%)378 (76.8)
 >1, n (%)114 (23.2)
  • *Based on the urgency levels 1 (life threatening) and 2 (emergent) of the Netherlands Triage System (NTS).

  • †Based on the urgency levels 3 (urgent), 4 (non-urgent) and 5 (advice) of the NTS.

  • ‡Between 06:01 and 18:00.

  • §Between 18:01 and 06:00.

  • ¶Between Friday 18:01 and Sunday 12:00.

  • **≥5 different types of medicines.

  • CCI, Charlson Comorbidity Index; ED, emergency department.