Table 1.
Asembo Bay cohort study sample characteristics, Nyanza Province, Kenya, 1992–1996
| Children ages 0–30 months | |||
|---|---|---|---|
| Original data (N = 1,182) | 50 Datasets with imputed data (N = 59,100) | ||
| Variable | N (%) or mean (SE) | Missing (%)* | N (%) or mean (SE) |
| Gender | – | 0 | – |
| Male | 598 (50.6) | – | 29,900 (50.6) |
| Female | 584 (49.4) | – | 29,200 (49.4) |
| Age at enrollment (days) | 5.4 (28.2) | 0 | 5.4 (28.2) |
| SES (value of goods, animals, and houses) | – | 4 (0.33) | – |
| Level 1 (lowest SES) | 588 (49.9) | – | 29,513 (49.9) |
| Level 2 (highest SES) | 590 (50.1) | – | 29,587 (50.1) |
| Mother’s education (years) | – | 4 (0.33) | – |
| < 7 | 454 (38.5) | – | 22,758 (38.5) |
| ≥ 7 | 724 (61.5) | – | 36,342 (61.5) |
| Village residence (sector) | – | 3 (0.25) | – |
| 1 | 380 (32.2) | – | 19,047 (32.2) |
| 2 | 315 (26.7) | – | 15,787 (26.7) |
| 3 | 283 (24.0) | – | 14,183 (24.0) |
| 4 | 201 (17.1) | – | 10,083 (17.1) |
| Maternal peripheral parasitemia | – | 22 (1.9) | – |
| Y | 407 (35.1) | 20,738 (35.1) | |
| N | 753 (65.0) | 38,362 (65.0) | |
| Sickle cell genotype | – | 173 (14.6) | – |
| Homozygous (SS) | 36 (3.6) | – | 2,122 (3.6) |
| Heterozygous (AS) | 173 (17.2) | – | 10,310 (17.5) |
| Negative (AA) | 800 (79.3) | – | 46,668 (79.0) |
*
The missing column indicates the number (%) of children for whom missing baseline data were imputed. Gender and age were complete variables and were not imputed.