Table 1.

Laboratory data and menstruation amount of both groups

	Control groupa (n=107)	IDA groupa (n=67)	P value
Age, y	32.7 +/- 6.2	39.5 +/- 9.2	<0.001
Red blood cells, million/μL	4.42 +/- 0.28	4.21 +/- 0.59	0.01
Hemoglobin, g/dL	13.1 +/- 0.7	8.5 +/- 2.1	<0.001
Hematocrit, %	38.8 +/- 4.3	29.2 +/- 5.5	<0.001
Mean corpuscular volume, fL	88.7 +/- 3.14	69.0 +/- 7.9	<0.001
Mean corpuscular hemoglobin, pg/cell	29.6 +/- 1.3	20.1 +/- 3.7	<0.001
Mean corpuscular hemoglobin concentration, g/dL	33.4 +/- 0.9	29.0 +/- 2.4	<0.001
Red blood cell width, %	12.8 +/- 0.5	18.0 +/- 3.4	<0.001
Platelet, 1000/μL	265.0 +/- 54.6	344.2 +/- 105.6	<0.001
Ferritin, ng/mL	60.0 +/- 46.7	5.5 +/- 5.0	<0.001
Pictorial blood-loss assessment chart score	185.2 +/- 193.6	362.5 +/- 352.4b	<0.001

^a Data are expressed as mean +/- standard deviation; ^bn = 65.