Table 7.

Folic acid deficiency and low zinc concentration by iron status

	Regular Regimen (RR)
Iron status	Folic acid deficiency by iron status h n = 2025 N = 856,699				Low zinc concentration by iron statusi n = 2268 N = 996,996
	Cases/n	N	%f	95% CI	Cases/n	N	%g	95% CI
Normala	91/1135	493903	8.3	2.5, 24.1	328/1264	567943	26.1	19.4, 34.1
Iron deficiency without anemiab	43/474	194059	10.8	3.8, 26.9	130/515	216433	25.8	18.4, 34.9
Anemiac	80/416	168736	19.3	10.5, 32.8	139/489	212621	30.2	22.1, 39.3
Iron deficiency anemiad	39/214	84405	18.5	10.9, 29.7	76/246	105359	32.7	23.0, 44.3
Anemia due to other causes e	41/202	84331	20.1	8.9, 39.5	63/243	107262	27.8	18.3, 39.8
IMSS-Oportunidades (IO)
Iron status	Folic acid deficiency by iron statush n = 1062 N = 88,848				Low zinc concentration by iron status i n = 1214 N = 92,310
	Cases/n	N	%f	95% CI	Cases/n	N	%g	95% CI
Normala	27/517	55564	8.8	2.6, 25.5	128/616	56805	11.4	5.3, 22.8
Iron deficiency without anemiab	8/298	18733	8.3	1.5, 34.5	80/334	19425	9.9	6.2, 15.4
Anemiac	18/247	14550	12.8	2.4, 46.8	85/264	16080	15.1	7.9, 26.8
Iron deficiency anemiad	11/122	6143	23.8	6.0, 60.5	39/128	6753	8.2	3.8, 16.7
Anemia due to other causese	7/125	8407	4.8	0.3, 45.8	46/136	9327	20.1	8.8, 39.5

N Population size (expanded sample)

^a Hemoglobin above the cut-off point for anemia and ferritin > = 10 μg/L

^b Ferritin < 10 μg/L and Hb > = cut-off for anemia

^c Hb < cut-off for anemia

^d Ferritin < 10 μg/L and Hb < cut-off for anemia

^e Ferritin ≥ 10 μg/L and Hb < cut-off for anemia

^f Comparing folic acid deficiency between iron status, RR p = 0.102; IO p = 0.208

^g Comparing low zinc concentration between iron status, RR p = 0.444; IO p = 0.238

^h Comparing folic acid deficiency between RR and IO according to iron status (p = 0.387)

ⁱ Comparing low zinc concentration between RR and IO according to iron status (p = 0.220)