In our General Election Factcheck 2015 report, we include five common pitfalls when it comes to political claims. These are errors that politicians often fall into, and are all too easy to fall for. We've made these mistakes ourselves at times, and know how hard they can be to spot. Here's our guide to how to identify and avoid them.
It's a record! Or is it? We hear many claims about record numbers, but when these claims come up, we always ask what's happening to the baseline.
For example, it would be no surprise to hear that the number of car crashes has gone up since 100 years ago. There are more cars now than there were 100 years ago. A significant factor in any increase might be just that the baseline has changed.
A fairer estimate of accidents would involve comparing the number of accidents to the total number of cars. To account for the baseline, it's best to look at the rate, rather than the level.
The UK's population is rising. Many political claims that we hear about record numbers of people boil down to that simple fact.
This "record number" is uninteresting. Records are fairly consistently made—and broken—bar periods of economic downturn, because the population is increasing.
So we shouldn't read too much into the employment level.
Look at the employment rate—the proportion of people aged 16-64 who are in work—and you do get a story: before the downturn in 2008 a peak of 73% of us were in work. That got as low as 70%, and is now back up beyond 73%. That's a record level on a more meaningful measure.
Another example comes from claims about records in England's A&E services. According to Labour, there were a record number of people waiting more than four hours in A&E; the Conservatives replied by saying there were a record number of people not waiting more than four hours in A&E.
Perhaps the most revealing figure is the baseline: there were 22.4 million A&E attendances in England last year—a record number.
That was 1.3 million more than in 2010 and around 3.7 million more than in 2005.
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