Laboratory Medicine and Quality Assurance

Table. 5. Table 5

Comparison of the pairwise results for RBC in urine dipstick and sediment tests

	RBC-dipstick	RBC-sediment (counts/HPF)						r

		<1	1–4	5–9	10–29	≥30	Sum
Vitamin C +	Negative	691*	255^†	91	20	7	1,064	0.684^‡
	Trace	24^†	51*	53^†	15	9	152
	1+	3	21^†	42*	23^†	18	107
	2+	2	14	18^†	23*	16^†	73
	3+	0	3	4	14^†	92*	113

Abbreviations: RBC, red blood cell; HPF, high power field; r, Spearman’s correlation coefficient.

*

No. with the same grade.

†

No. of cases within one grade difference.

‡

P<0.05.

J Lab Med Qual Assur 2017;39:76~82 https://doi.org/10.15263/jlmqa.2017.39.2.76

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