Dicing with death
Once or twice the Jobbing Doctor has commented on how odd it is that he has seen three cases of a condition that he hasn't seen for ages all in one week. The same thing happens in hospitals. Very rare things come in runs. You would think that it couldn't happen by chance but it does. If you listen to radioactive decay using a Geiger counter the blips you hear (listen) are random but they are not evenly spaced. Sometimes the blips seem to occur in runs. So it is with any random event.
If you have ever wondered why it is you have to wait so long for a bus, that too is predictable. Unless the buses are evenly spaced you are more likely to arrive at a big gap between buses - because it is bigger. It's as simple as that. That's why when you travel on the tube they may stop the train to improve the service. It might seem crackers but it is to ensure the trains are evenly spaced which means that people will never have to wait too long. Even spacing is crucial. Dr Grumble has patients whose job it is to control the buses in the same way. Heavy traffic can limit what they can do but GPS gives them the opportunity to try and space the buses evenly along the route. The days of buses coming in threes should be over.
People don't understand statistics. Dr Grumble includes himself in this. It is a difficult subject. Managers certainly don't understand statistics. They spout utter nonsense. We had top management consultants in recently. We paid them a small fortune. They were on about how we should improve our performance to reach that of the best quartile of equivalent hospitals. There was the unspoken assumption that our performance was below par because we are crap. Dr Grumble had been warned in advance to behave. He pointed out serious flaws in the data but was given a stern look. He was tempted to point out that 50% of doctors are below average and should be sacked but he bit his tongue. Mad management speak fools nobody but highlighting the flaws in their thinking is not permitted in today's NHS.
Sometimes though the effects of statistics on individuals are too serious to ignore. Explaining this to managers who just want to cover their backs by sacking poorly performing doctors is a challenge. They cannot understand how sheer chance can make you a killer.