Is one aspect of the UK's 'productivity puzzle' the size of the NHS?
The Office of National Statistics has always had difficulty finding good data to measure NHS productivity; and its the UK largest employer.
And, much of the key work of the NHS is (and should be) prevention... but that shows up as effort (cost) expended in any data, but output (life gains) years/decades ahead.
Perhaps the NHS should be excluded from productivity data?
h/t Roy Lilley/NHSMangers.net