Table 5.

Pairwise comparison of the RBC results between the urine dipstick and sediment tests

	Hemoglobin‐dipstick	RBC‐sediment (counts/HPF)						r
		<1	1‐4	5‐9	10‐29	≥30	Sum
Vit C + (total)	Negative	691	255	91	20	7	1064	.684a
	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
Vit C 1+	Negative	180	65	29	4	2	280	.704a
	Trace	11	18	18	2	3	52
	1+	2	11	14	11	11	49
	2+	1	7	8	8	5	29
	3+	0	0	1	8	31	40
Vit C 2+	Negative	420	153	49	11	4	637	.684a
	Trace	9	25	31	9	5	79
	1+	0	7	22	10	6	45
	2+	1	6	8	12	9	36
	3+	0	3	3	4	50	60
Vit C 3+	Negative	91	37	13	5	1	147	.621a
	Trace	4	8	4	4	1	21
	1+	1	3	6	2	1	13
	2+	0	1	2	3	2	8
	3+	0	0	0	2	11	13

RBC, red blood cells; HPF, high‐power field.

Number of cases [] within one‐grade difference and [] with the same grade.

r, Spearman's correlation coefficient.

^a P<.05.