Excellent agreement of Norwegian trauma registry data compared to corresponding data in electronic patient records

Naberezhneva, N; Uleberg, Oddvar; Dahlhaug, M; Giil-Jensen, V; Ringdal, K G; Røise, O

doi:10.1186/s13049-023-01118-5

Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine

Table 1 Observed agreement, Cohen’s Kappa and Gwet’s AC₁ for nominal variables

From: Excellent agreement of Norwegian trauma registry data compared to corresponding data in electronic patient records

Variable	Patients (n)	Number of missing registrations		Number of registrations^a	Observed agreement		Kappa (95% CI)	AC₁ (95% CI)
Variable	Patients (n)	NTR	EPR	Number of registrations^a	Observed agreement (%)^b	Conc.(N); non-conc. (N)^c	Kappa (95% CI)	AC₁ (95% CI)
*Accident and injury related data*:
Helmet use	180	0	2	178	89.9	160; 18	0.84 (0.77–0.91)	0.87 (0.81–0.93)
MOI transport	180	0	0	180	96.1	173; 7	0.92 (0.87–0.98)	0.95 (0.91–0.99)
MOI road traffic	180	0	0	180	97.2	175; 5	0.95 (0.90–0.99)	0.96 (0.93-1.00)
MOI road traffic type	93	5	1	87	96.6	84; 3	0.95 (0.89-1.00)	0.96 (0.92-1.00)
MOI road traffic role	93	5	1	87	97.7	85; 2	0.91 (0.78-1.00)	0.98 (0.94-1.00)
MOI fall	180	0	0	180	96.1	173; 7	0.91 (0.84–0.98)	0.93 (0.88–0.98)
MOI violence	180	0	0	180	100.0	180; 0	1.00 (1.00–1.00)	1.00 (1.00–1.00)
MOI self inflicted	180	0	0	180	100.0	180; 0	1.00 (1.00–1.00)	1.00 (1.00–1.00)
MOI work accident	180	0	0	180	98.9	178; 2	0.95 (0.88-1.00)	0.99 (0.97-1.00)
MOI sports	180	0	0	180	98.9	178; 2	0.95 (0.88-1.00)	0.99 (0.97-1.00)
MOI fire	180	0	0	180	100.0	180; 0	1.00 (1.00–1.00)	1.00 (1.00–1.00)
MOI other	180	0	0	180	97.8	176; 4	0.88 (0.76-1.00)	0.97 (0.95-1.00)
MOI	180	0	0	180	96.1	173; 7	0.95 (0.92–0.99)	0.96 (0.93–0.99)
Injury intention	180	0	0	180	100.0	180; 0	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Blunt injury	180	0	0	180	98.3	177; 3	0.89 (0.76-1.00)	0.98 (0.96-1.00)
Penetrating injury	180	0	0	180	100.0	180; 0	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Dominating injury	180	0	0	180	99.4	179; 1	0.97 (0.91-1.00)	0.99 (0.98-1.00)
*Prehospital data*:
Pre-hospital airway	173	1	1	172	99.4	171; 1	0.91 (0.72-1.00)	0.99 (0.98-1.00)
Pre-hospital decompression	173	1	1	172	99.4	171; 1	0.66 (0.04-1.00)	0.99 (0.98-1.00)
Pre-hospital care level	172	1	1	171	86.5	148; 23	0.71 (0.61–0.82)	0.85 (0.79–0.91)
Hospital type	175	1	1	174	97.7	170; 4	0.90 (0.81-1.00)	0.97 (0.95-1.00)
*Emergency admission data*:
Trauma team	180	0	0	180	99.4	179; 1	0.00 (0.00–0.00)	0.99 (0.98-1.00)
In-hospital intubation	180	0	0	180	99.4	179; 1	0.95 (0.84-1.00)	0.99 (0.98-1.00)
In-hospital chest drainage	180	0	0	180	100.0	180; 0	1.00 (1.00–1.00)	1.00 (1.00–1.00)
Emergency intervention	180	0	0	180	100.0	180; 0	1.00 (1.00–1.00)	1.00 (1.00–1.00)
*Hospital stay data*:
Hospital care level	180	0	0	180	91.1	164; 16	0.87 (0.81–0.93)	0.89 (0.84–0.94)
Discharge destination	179	0	0	179	96.6	173; 6	0.90 (0.83–0.98)	0.96 (0.94–0.99)

Notes:
^aNumber of cases for registrations present in both NTR and EPRs;
^bObserved agreement calculated as number of concordant answers divided by n and multiplied by 100%;
^cConcordant answers – agreements over all paired answers for a given variable.
Abbreviations:
NTR, Norwegian Trauma Registry; EPR, Electronic Patient Record; Conc., concordant answers; non-conc., non-concordant answers; AC₁, Gwet’s first agreement coefficient; CI, confidence interval; MOI, Mechanism of Injury

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