Table 5. Erythrocyte iron isotopic enrichment and iron absorption (mean ± SD).

			Rice group		Steamed buns group
	Mean	SD	Mean	SD	Mean	SD	P value
Oral 57Fe dose (mg)	6.49	0.18	6.47	0.23	6.51	0.11	0.632
Oral 58Fe dose (mg)1	0.141	0.003	0.141	0.005	0.142	0.002	0.632
Dose 58Fe iv (mg)	4.79	0.51	4.91	0.13	4.67	0.72	0.310
Dose 57Fe iv (mg)2	0.465	0.051	0.476	0.129	0.453	0.070	0.299
Baseline 57Fe:56Fe	0.02305	0.00000	0.02307	0.00002	0.02304	0.00001	0.745
57Fe:56Fe at two weeks	0.02359	0.00014	0.02360	0.00020	0.02350	0.00020	0.137
Change in 57Fe:56Fe	0.00052	0.00014	0.00050	0.00020	0.00040	0.00020	0.133
Baseline 58Fe:56Fe*	0.00305	0.00003	0.00304	0.00003	0.00306	0.00001	0.377
58Fe:56Fe at two weeks	0.0049	0.0003	0.0049	0.0002	0.0049	0.0004	0.894
Change in 58Fe:56Fe	0.0018	0.0003	0.0018	0.0001	0.0018	0.0003	0.953
57Fe absorption (mg)	0.1150	0.0731	0.1414	0.0847	0.0831	0.0482	0.061

¹ Oral ⁵⁸Fe dose means the dose of the mixed oral ⁵⁸Fe from the oral ⁵⁷Fe preparation.

² Dose ⁵⁷Fe iv means the dose of the mixed iv ⁵⁷Fe from the iv ⁵⁸Fe preparation.