Table 5.

Estimated median survival in serviceable physical condition

Variable	12 months	24 months	36 months
Zamfara
% surviving in serviceable condition (95% CI)	97.7 (95.7–98.8)	91.8 (84.1–95.9)	80.4 (72.7–86.3)
Median survival in years
Estimated from Fig. 4	5.8	5.6	5.3
Calculated from last two data points (95% CI)	–	–	5.3 (4.6–6.4)
Ebonyi
% surviving in serviceable condition (95% CI)	96.0 (92.5–97.9)	76.3 (67.9-83.1)	54.8 (41.4-67.6)
Median survival in years
Estimated from Fig. 4	4.1	3.3	3.3
Calculated from last two data points (95% CI)	–	–	3.3 (2.8–4.2)
Oyo
% surviving in serviceable condition (95% CI)	92.0 (86.0–95.6)	74.6 (60.2–85.1)	n.a
Median survival in years
Estimated from Fig. 4	2.7	3.2	n.a
Calculated from last two data points (95% CI)	–	3.2 (2.1–5.3)