Table 1:
Population size, marital and birth history descriptive statistics for women and men in the Gwembe Tonga and Zambia DHS (1992, 1996, 2001–02, and 2007) datasets
| Women | Men | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gwembe Tonga |
1992 ZDHS* |
1996 ZDHS |
2001–02 ZDHS |
2007 ZDHS |
Gwembe Tonga |
1996 ZDHS |
2001–02 ZDHS |
2007 ZDHS |
|
| Individuals aged 20 and over | 2206 | 4800 | 5637 | 5487 | 5269 | 1900 | 1307 | 1591 | 4829 |
| Ever married | 1768 | 4516 | 5219 | 5063 | 4747 | 1258 | 1041 | 1341 | 3910 |
| Married individuals used in analysis** | 1405 | 3615 | 4071 | 3416 | 2264 | 1021 | Not included in analysis | ||
| Mean age first marriage (SE) | 19.9 (0.16) |
17.2 (0.05) |
17.5 (0.05) |
17.7 (0.05) |
18.1 (0.05) |
25.6 (0.24) |
22.8 (0.13) |
22.6 (0.11) |
22.9 (0.07) |
| Women married more than once (%) |
143 | 1186 | 1346 | 1240 | 1009 | 1,083 | 349 | 524 | 994 |
| (8%) | (26%) | (26%) | (25%) | (21%) | (84%) | (34%) | (39%) | (27%) | |
| Men with more than 1 wife (%) | Not applicable | 337 (27%) |
93 (10%) | 122 (10%) |
284 (8%) |
||||
| Percent of polygynists with exactly 2 wives |
68% | 94% | 84% | 91% | |||||
| Mean age in years at first birth (SE) |
20.4 | 18.1 | 18.3 | 18.3 | 18.5 | 25.0 | Not available | ||
| (0.07) | (0.05) | (0.04) | (0.04) | (0.04) | (0.18) | ||||
| Mean birth interval (SE) | 2.7 (0.02) |
2.8 (0.97) |
2.8 (1.04) |
2.9 (1.01) |
3.0 (1.02) |
2.4 (0.02) |
|||
| Proportion with last closed birth interval ≥ 5 years |
5.6% | 21.2% | 23.5% | 21.0% | 21.5% | 4.2% | |||
| Mean number of live births (SE) | 4.1 (0.08) |
4.6 (0.04) |
4.5 (0.04) |
4.4 (0.04) |
4.3 (0.04) |
4.5 (0.16) |
4.8 (0.12) |
5.0 (0.11) |
4.7 (0.05) |
| Mean number of living children (SE) |
3.1 | 3.8 | 3.6 | 3.7 | 3.6 | 3.3 | 3.9 | 4.1 | 4.0 |
| (0.06) | (0.4) | (0.03) | (0.03) | (0.03) | (0.11) | (0.10) | (0.09) | (0.05) | |
| Proportion childless§ | 8.10% | 2.41% | 2.73% | 2.74% | 2.53% | 17.10% | Not available | ||
*
The 1992 ZDHS did not contain a male sample.
**
For the Gwembe Tonga, these are people continuously married for 5 years preceding each observation included in analysis; for the ZDHS, these are women who married at least 5 years prior to the observation and were still married at the time of the survey.
§
Proportion childless was estimated for those married at least 7 years before last observation using Larsen’s method (Larsen, 2000).