Table 1. Characteristics of the study population in Ifakara and Rufiji Health and Demographic Surveillance Systems, United Republic of Tanzania, 2001–2011.
| Variable | No. (%) |
||
|---|---|---|---|
| All children | Ifakara | Rufiji | |
| Total | 140 162 (100) | 78 136 (55.7) | 62 026 (44.3) |
| Child | |||
| Sex | |||
| Boy | 69 953 (49.9) | 39 034 (50.0) | 30 919 (49.9) |
| Girl | 70 209 (50.1) | 39 102 (50.0) | 31 107 (50.1) |
| Birth order | |||
| First | 51 754 (36.9) | 30 970 (39.6) | 20 784 (33.5) |
| Second or third | 49 134 (35.1) | 27 826 (35.6) | 21 308 (34.4) |
| Fourth or more | 39 274 (28.0) | 19 340 (24.8) | 19 934 (32.1) |
| Mother | |||
| Age group, years | |||
| < 20 | 38 464 (27.4) | 21 782 (27.9) | 16 682 (26.9) |
| 20–34 | 83 765 (59.8) | 47 390 (60.7) | 36 375 (58.7) |
| ≥ 35 | 17 933 (12.8) | 8 964 (11.5) | 8 969 (14.5) |
| Education | |||
| No education | 56 333 (40.2) | 27 472 (35.2) | 28 861 (46.5) |
| Primary incomplete | 20 486 (14.6) | 11 412 (14.6) | 9 074 (14.6) |
| Primary complete | 59 038 (42.1) | 37 349 (47.8) | 21 689 (35.0) |
| Secondary or more | 4 305 (3.1) | 1 903 (2.4) | 2 402 (3.9) |
| Household | |||
| Wealth quintilea | |||
| First | 25 084 (19.3) | 14 828 (20.4) | 10 256 (17.9) |
| Second | 25 526 (19.6) | 14 545 (20.0) | 10 981 (19.2) |
| Third | 28 299 (21.8) | 15 635 (21.5) | 12 664 (22.1) |
| Fourth | 26 970 (20.8) | 14 320 (19.7) | 12 650 (22.1) |
| Fifth | 24 125 (18.6) | 13 419 (18.5) | 10 706 (18.7) |
a First quintile represents the poorest households and fifth quintile represents the richest. Overall, 6.9% of households in Ifakara and 7.7% in Rufiji have missing data. These percentages varied by year. In 2000, 8.0% of households in Ifakara had missing data and 15.8% in Rufiji. In 2011, it was 9.4% in Ifakara and 7.1% in Rufiji.
Note: Inconsistencies arise in some values due to rounding. Ifakara Health and Demographic Surveillance System covers part of Kilombero and Ulanga districts in Morogoro region and Rufiji Health and Demographic Surveillance System covers the half of Rufiji district in Pwani region.