Comorbidity Assessment in Skin Cancer Patients: A Pilot Study Comparing Medical Interview with a Patient-Reported Questionnaire

Table 4

Percent agreement and kappa between medical interview (MI) and PRACE-27 assessments for overall comorbidity scores.

PRACE-27
	Medical interview					Percent agreement	Kappa	value
Overall comorbidity score	0	1	2	3	Total # patients	91.7	0.64	<0.001
0	5	0	0	0	5
1	2	11	0	0	13
2	1	2	9	1	13
3	1	3	3	6	13
Total # patients	9	16	12	7	44

PRACE-27 and MI had identical overall comorbidity scores for 31/44 patients (marked with ). There were 12 patients for whom PRACE-27 had a higher overall comorbidity score (marked with ) compared to MI and 1 patient (marked with ) for whom MI had a higher overall comorbidity score compared to PRACE-27.