Table 3 Median age at first sex (AFS) and age at first marriage (AFM) in each site by reliability of data among those attending the three comparative rounds | Site | Cohort | Indicator | All data | Reliable data | Unreliable data |
| Median (IQR) | Median (IQR) | Median (IQR) |
| Men | | | | | |
| Manicaland | 1950–9 | AFS | 20.1 (18.3–22.5) | 19.9 (18.1–22.2) | 20.8 (19.2–23.0) |
| AFM | 24.7 (22.2–27.2) | 24.9 (22.2–27.4) | 24.2 (22.5–26.9) |
| 1960–9 | AFS | 19.6 (17.9–21.7) | 19.4 (17.7–21.8) | 19.9 (18.3–21.4) |
| AFM | 25.0 (22.3–27.9) | 25.3 (22.3–28.2) | 24.0 (22.0–26.5) |
| 1970–9 | AFS | 19.1 (17.4–21.2) | 19.1 (17.3–21.3) | 19.0 (17.6–20.8) |
| AFM | 24.8 (22.3–27.5) | 25.1 (22.6–27.9) | 22.3 (20.5–23.8) |
| 1980–9 | AFS | 19.2 (17.4–21.4) | 19.4 (17.5–21.6) | 17.5 (16.6–18.9) |
| AFM | 24.3 (22.3–25.7) | 24.3 (22.5–25.2) | 20.2 (18.7–22.1) |
| Masaka | 1950–9 | AFS | 18.3 (17.1–20.0) | 18.4 (17.3–20.0) | 17.8 (16.8–19.9) |
| AFM | 23.3 (20.8–26.7) | 23.0 (20.6–26.0) | 24.9 (22.7–27.9) |
| 1960–9 | AFS | 18.1 (17.0–19.5) | 18.0 (17.0–19.0) | 18.6 (17.3–20.4) |
| AFM | 23.0 (20.6–26.3) | 23.0 (20.3–26.0) | 23.7 (21.7–26.6) |
| 1970–9 | AFS | 18.0 (16.6–19.0) | 18.0 (16.5–19.0) | 17.6 (16.7–19.5) |
| AFM | 23.9 (21.0–27.3) | 24.4 (20.9–28.1) | 22.4 (21.3–24.2) |
| 1980–9 | AFS | 16.7 (15.3–18.0) | 16.7 (15.3–18.0) | 16.9 (15.5–17.7) |
| AFM | 24.6 (21.8–27.6) | 25.2 (21.8–) | 21.3 (19.5–23.2) |
| Umkhanyakude | 1950–9 | AFS | 20.2 (18.0–22.3) | 20.2 (17.9–22.1) | 20.5 (18.8–23.3) |
| AFM | – (38.6–) | – (40.4–) | 32.5 (27.1–41.7) |
| 1960–9 | AFS | 19.3 (17.6–21.5) | 19.2 (17.4–21.2) | 20.0 (18.4–22.6) |
| AFM | – (41.8–) | – (42.6–) | 31.1 (27.6–34.9) |
| 1970–9 | AFS | 18.3 (16.5–20.3) | 18.3 (16.4–20.2) | 18.8 (17.2–20.5) |
| AFM | – (–) | – (–) | 32.1 (28.6–32.5) |
| 1980–9 | AFS | 17.1 (15.9–18.6) | 17.2 (15.9–18.7) | 17.0 (15.7–18.1) |
| AFM | – (–) | – (–) | – (–) |
| | | | | |
| Women | | | | | |
| Manicaland | 1950–9 | AFS | 19.0 (17.2–20.7) | 19.0 (17.1–20.6) | 19.6 (18.0–21.3) |
| AFM | 19.3 (17.6–21.0) | 19.1 (17.5–20.8) | 20.2 (18.4–21.8) |
| 1960–9 | AFS | 18.7 (17.0–20.6) | 18.7 (17.0–20.6) | 18.7 (17.4–20.7) |
| AFM | 19.0 (17.4–21.1) | 19.0 (17.2–21.0) | 19.4 (17.9–21.5) |
| 1970–9 | AFS | 19.0 (17.5–21.0) | 19.0 (17.5–21.0) | 18.5 (17.2–20.4) |
| AFM | 19.7 (17.9–21.9) | 19.8 (18.0–22.0) | 19.1 (17.5–20.7) |
| 1980–9 | AFS | 19.0 (17.6–20.6) | 19.0 (17.6–20.7) | 17.8 (16.9–18.8) |
| AFM | 19.6 (18.0–21.5) | 19.7 (18.1–21.6) | 18.1 (17.1–19.1) |
| Masaka | 1950–9 | AFS | 16.7 (15.5–18.0) | 16.5 (15.4–18.0) | 17.2 (16.0–18.6) |
| AFM | 18.0 (16.1–19.9) | 17.9 (16.0–19.3) | 18.5 (17.4–20.8) |
| 1960–9 | AFS | 16.9 (15.7–18.3) | 16.9 (15.6–18.3) | 17.1 (16.2–18.1) |
| AFM | 18.2 (16.8–20.1) | 18.1 (16.4–19.9) | 19.1 (17.7–20.8) |
| 1970–9 | AFS | 17.0 (15.9–18.4) | 17.0 (15.8–18.4) | 17.2 (16.3–18.6) |
| AFM | 18.6 (17.0–20.8) | 18.5 (17.0–20.7) | 18.8 (17.2–21.5) |
| 1980–9 | AFS | 16.8 (15.8–18.0) | 16.8 (15.7–18.0) | 16.8 (16.0–17.9) |
| AFM | 19.2 (18.0–21.4) | 19.4 (18.1–21.6) | 18.1 (17.3–19.9) |
| Umkhanyakude | 1950–9 | AFS | 18.6 (17.0–20.3) | 18.6 (17.0–20.3) | 18.5 (17.3–19.9) |
| AFM | – (41.9–) | – (48.4–) | 25.9 (24.4–29.3) |
| 1960–9 | AFS | 18.6 (17.0–20.3) | 18.5 (16.9–20.4) | 19.0 (17.4–20.6) |
| AFM | – (31.4–) | – (34.0–) | 28.9 (24.5–32.1) |
| 1970–9 | AFS | 18.3 (17.3–20.6) | 18.8 (17.3–20.6) | 19.1 (17.5–20.5) |
| AFM | – (38.5–) | – (–) | 25.3 (23.0–29.0) |
| 1980–9 | AFS | 18.0 (17.0–19.2) | 18.0 (16.9–19.2) | 17.9 (17.1–19.2) |
| AFM | – (–) | – (–) | 24.7 (20.4–26.8) |