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Table 4 Proportions (%) of patients with each variable among the patients with and without each secondary outcome. I.e. 7.1% of patients requiring PICU admission and 1.0% of patients not requiring PICU admission had a previous EMS contact. Comparisons between the proportions with and without were made using Fisher’s test

From: Why do infants need out-of-hospital emergency medical services? A retrospective, population-based study

  Previous EMS contact within 72 h No measurements conducted by EMS Native language other than Finnish or Swedish Previous ICD10 P-diagnosisa Previous ICD10 Q-diagnosisb
% of all (N = 28) patients with PICU admissions 7.1% 3.6% 25.0% 35.7% 14.3%
% of all (N = 1682) patients without PICU admission 1.0% 15.0% 29.2% 15.7% 6.3%
  P = 0.04 P = 0.11 P = 0.83 P = 0.01 P = 0.10
% of all (N = 91) patients with medical state other than good upon arrival at ED 0.0% 4.4% 20.9% 25.3% 19.8%
% of all (N = 1619) patients with medical state good upon arrival at ED or ED care not required 1.2% 15.7% 29.5% 5.4% 5.7%
  P = 0.62 P < 0.01 P = 0.10 P = 0.02 P < 0.01
% of all (N = 386) patientsc with any medication or respiratory support given at ED 2.1% 8.5% 29.4% 17.4% 11.1%
% of all (N = 1324) patients without any medication or respiratory support given at ED 0.8% 16.6% 29.1% 15.6% 16.1%
  P = 0.05 P < 0.01 P = 0.90 P = 0.43 P = 0.75
% of all (N = 336) patients with hospitalizationc 2.1% 9.5% 26.3% 22.9% 11.0%
% of all (N = 1363) patients without hospitalizationc 0.9% 16.1% 29.9% 14.3% 5.4%
  P = 0.08 P < 0.01 P = 0.20 P < 0.01 P < 0.01
% of all (N = 18) patients with surgical proceduresd
during the same visitd
0.0% 22.2% 11.1% 11.1% 11.1%
% of all (N = 1692) patients without surgical proceduresd
during the same visitd
1.1% 14.7 29.4% 16.1% 6.4%
  P < 0.05 P = 0.32 P = 0.12 P = 0.75 P = 0.33
  1. ED Emergency department, EMS Emergency medical services, ICD International Classification of Diseases, PICU Pediatric intensive care unit
  2. aCertain conditions originating in the perinatal period
  3. bCongenital malformations, deformations, and chromosomal abnormalities
  4. cDuring the same hospital visit beginning within 72 h after the initial EMS contact
  5. dExcluding minor procedures performed at the ED, e.g. insertion of a nasogastric tube