Fig. 2.

Average annual cost of providing oxygen for paediatric patients in an average‑sized^a hospital or major health centre, per daily hours of grid power available,^b concentrator lifespan and level of leakage of oxygen cylinders, the Gambia, 2004

kVa, kilovolt-ampere.

^a “Average-sized” is defined here as having 15 paediatric beds and an estimated annual oxygen requirement of 0.5 million litres, 1286 patient-years and 5556 concentrator-hours.

^b The balance in power requirement was met with a 40-kVA generator (usually present in Gambian facilities).