Table 2

Concentrator repair and maintenance at 12, 24 and 40 months postimplementation of oxygen systems in 10 intervention hospitals and hours of concentrator use in each time interval

HospitalMachines supplied, nConcentrator repair and maintenance needs
12 months24 months40 months
Number needing repair, n(%)Working after repair
n (%)
Machines replaced n(%)Number needing repair, n(%)Working after repair
n (%)
Number needing repair, n(%)Working after repair
n (%)
Northern provinces
H1P22 1 (50) 201 2 1 1
H2P23 0 (0) 320 3 0 3
H1P34 2 (50) 401 4 2 2
H2P34 1 (25) 401 3 1 3
Subtotal13 4 (31)13 (100)2 (15)3 (23) 12 (92) 4 (31) 9 (69)
Southern provinces
H1P14 2 (50) 321 4 2 2
H2P13 1 (33) 312 3 0 3
H1P44 4 (100) 321 4 2 2
H2P46 2 (33) 610 6 2 6
H1P54 1 (25) 310 4 2 3
H2P54 0 (0) 400 4 0 4
Subtotal2510 (40)22 (88)7 (28)4 (16) 25 (100) 8 (32) 20 (80)
Total3814 (37)35 (92)9 (24)7 (18) 37 (97) 12 (32) 29 (76)
Hours of use13 465 (data available from 37/38 machines)17 050 (38/38 machines)17 839 (35/38 machines)