Table 2.
Hemoglobin concentration and prevalence of anemia, by region, age group, and care regimen
| Region/Age groups | Regular Regimen (RR) | IMSS-Oportunidades (IO) | ||||||||||
| n | N | Hemoglobin concentration g/dL* | Prevalence of anemia** | n | N | Hemoglobin concentration g/dL* | Prevalence of anemia** | |||||
| Mean | 95% CI | % | 95% CI | Mean | 95% CI | % | 95% CI | |||||
| North | ||||||||||||
| < 6 months | 97 | 49416 | 11.5 | 10.9, 12.0 | 5.1 | 2.7, 9.6 | 142 | 992 | 11.7 | 11.3, 12.1 | 12.2 | 7.4, 19.4 |
| 6–11 months | 321 | 181422 | 11.5 | 11.1, 11.9 | 14.5 | 9.0, 22.6 | 223 | 1891 | 11.6 | 11.2, 12.1 | 18.0 | 7.1, 38.4 |
| 12–23 months | 367 | 223234 | 11.7 | 11.5, 11.9 | 15.2 | 10.6, 21.4 | 519 | 5073 | 11.7 | 11.3, 12.0 | 21.3 | 8.0, 45.9 |
| Total North | 785 | 454072 | 11.6 | 11.2, 12.0 | 13.8a | 9.8, 19.2 | 884 | 7956 | 11.7 | 11.3, 12.0 | 19.4a | 8.2, 39.2 |
| Center | ||||||||||||
| < 6 months | 148 | 53494 | 11.4 | 10.9, 11.8 | 4.5 | 1.4, 14.0 | 79 | 2315 | 13.7 | 10.9, 16.4 | 11.2 | 5.8, 20.4 |
| 6–11 months | 291 | 115119 | 11.7 | 11.4, 12.0 | 14.4 | 9.7, 20.8 | 273 | 6975 | 12.1 | 11.4, 12.8 | 17.8 | 6.3, 41.1 |
| 12–23 months | 324 | 151064 | 11.7 | 11.1, 12.2 | 19.1 | 13.9, 25.7 | 612 | 16858 | 12.2 | 11.6, 12.9 | 18.3 | 10.7, 29.5 |
| Total Center | 763 | 319677 | 11.7 | 11.2, 12.2 | 15.0a | 10.0, 21.8 | 964 | 26148 | 12.3 | 11.8, 12.9 | 17.6a | 9.4, 30.4 |
| South | ||||||||||||
| < 6 months | 27 | 14792 | 10.7 | 10.2, 11.2 | 31.3 | 20.6, 44.5 | 36 | 8701 | 11.3 | 10.9, 11.8 | 16.1 | 4.7, 42.5 |
| 6–11 months | 227 | 78181 | 11.0 | 10.5, 11.4 | 36.1 | 20.0, 56.1 | 135 | 38100 | 11.6 | 11.4, 11.9 | 14.9 | 10.6, 20.5 |
| 12–23 months | 351 | 110062 | 11.1 | 10.6, 11.6 | 39.2 | 23.1, 58.1 | 290 | 77882 | 11.8 | 11.5, 12.0 | 22.5 | 17.4, 28.6 |
| Total South | 605 | 203035 | 11.0 | 10.5, 11.5 | 37.4a | 22.6, 55.0 | 461 | 124683 | 11.7 | 11.5, 11.9 | 19.7a | 16.4, 23.6 |
| Mexico City & | ||||||||||||
| < 6 months | 67 | 32810 | 10.9 | 10.7, 11.0 | 15.6 | 13.2, 18.3 | ||||||
| 6–11 months | 183 | 111755 | 11.2 | 11.0, 11.5 | 27.3 | 21.0, 34.6 | ||||||
| 12–23 months | 245 | 140561 | 11.4 | 11.2, 11.6 | 25.5 | 22.2, 29.1 | ||||||
| Total Mexico City & | 495 | 285126 | 11.3 | 11.0, 11.5 | 25.1a | 21.2, 29.3 | ||||||
| NATIONAL | ||||||||||||
| < 6 months | 339 | 150512 | 11.2 | 11.0, 11.4 | 9.8 | 6.3, 14.8 | 257 | 12008 | 11.8 | 11.0, 12.6 | 14.8 | 5.6, 33.6 |
| 6–11 months | 1022 | 486477 | 11.4 | 11.2, 11.6 | 20.9 | 17.0, 25.4 | 631 | 46966 | 11.7 | 11.4, 11.9 | 15.5 | 11.2, 21.0 |
| 12–23 months | 1287 | 624921 | 11.5 | 11.4, 11.7 | 22.7 | 19.2, 26.6 | 1421 | 99813 | 11.8 | 11.6, 12.1 | 21.7 | 17.3, 27.0 |
| TOTAL NATIONAL | 2648 | 1261910 | 11.4 | 11.3, 11.6 | 20.5b | 17.3, 24.1 | 2309 | 158787 | 11.8 | 11.6, 12.0 | 19.3b | 16.1, 23.0 |
N Population size (expanded sample)
* Hemoglobin concentration adjusted by altitude.
** Hemoglobin (Hb) < 13.5 g/dL for children under 2 weeks of age, Hb< 12.5 g/dL for children between 2 and 3 weeks of age, Hb <10 g/dL for children between 1 and 2 months old, Hb< 9.0 for children between 2 and 3 months old Hb< 9.5 for children between 3 and 6 months old, Hb<10.5 g/dL for children between 6 and <12 months old and Hb<10.7 g/dL for children between 12 and 23 months old.
& Mexico City and periurban area
a Comparing between regions, RR = 0.001; IO = 0.908.
b Comparing between regimens, national level, p = 0.635