E-DRUG: Oxygen concentrators

Who could provide us with information on the cost-effectiveness,
running-costs, capacity, maintenance etc of oxygen-concentrators?

Two oldish articles giving useful background are in Drug & Therapeutics
Bulletin (UK):

Oxygen in the home. Drug & Therap Bulletin 1982; 20: 65-67
Home oxygen - still room for improvement. DTB 1990;28: 99-100

You may find some current info in the Drug Tariff. Dept of Health. London
HMSO. It is issued monthly. I haven't seen this for a long time; info on
prescribing concentrators used to be in Part X.