Self-referred walk-in patients in the emergency department – who and why? Consultation determinants in a multicenter study of respiratory patients in Berlin, Germany

Table 6 Outcomes of ED consultation

		Group
Variable	Measure	Total cohort	SRW	non-SRW	Group difference
Participants	n	472	185	278	χ2 test: p value
Respiratory diagnoses, ICD-10 codes
Pneumonia J12-J18	%	23.3	12.4	30.6	< 0.001
COPD and chronic bronchitis J40-J44	%	34.3	20.5	43.2	< 0.001
Asthma bronchiale J45-J46	%	9.7	14.1	6.8	0.010
Other respiratory tract infection (incl. bronchitis, influenza) J09-J11, J20-J22	%	8.5	10.8	7.2	0.175
Upper airway conditions J0x/J3x	%	10.2	16.2	6.5	0.001
Respiratory symptom diagnosis only (ICD-10 R section code, no J section diagnosis)	%	14.4	17.8	11.9	0.072
Respiratory failure J96 coded	%	19.5	7.0	27.7	< 0.001
ED visit consequence
Outpatients	%	61.2	79.5	48.6	< 0.001
Hospital admission	%	38.8	20.5	51.4

Note. Data on visit outcomes available for all participants; % = percentage of cases; Diagnoses: Respiratory ICD-codes documented in ED and/or hospital documentation: ED documentation only for outpatients, discharge diagnoses additionally considered for inpatients. Multiple diagnoses possible for individual cases

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