The use and usefulness of point-of-care tests in patients with pharyngotonsillitis – an observational study in primary health care

Table 3 Median CRP values at different Centor scores in relation to RADT outcome

	All patients tested with CRP				Patients with a positive RADT				Patients with a negative RADT
Centor score	No. of patients	Median CRP (mg/l)	IQR	Min–max	No. of patients	Median CRP (mg/l)	IQR	Min–max	No. of patients	Median CRP (mg/l)	IQR	Min–max
0	9	0	0–16	0–26	1	0	0	0	8	0	0–21	0–26
1	34	8	0–24	0–87	3	9	0–9	0–25	29	6	0–23	0–87
2	37	12	0–32	0–200^a	8	41	24–70	7–89	28	8	0–22	0–200^a
3	24	32	13–79	0–200^a	9	46	25–143	10–200^a	15	25	8–66	0–120
4	7	87	54–194	0–200^a	5	87	41–167	0–194	2	127	54–200^a	54–200^a
Total	111	15	0–36	0–200^a	26	41	20–88	0–200^a	82	9	0–26	0–200^a

CRP = C-reactive protein; CI = confidence interval; IQR = interquartile range.
^aA CRP value of 200 mg/l was the upper limit of the point-of-care test used in this study.

ISSN: 2731-4553