| n | Number of years (range) | Mean | Standard deviation |
---|---|---|---|---|
Age left school | ||||
 Quantitative survey | 7713 | 32–85 | 51.3 | 10.8 |
 Qualitative interview | 18 | 40–73 | 53.1 | 9.1 |
Start of job done for most of working life | Â | Â | Â | Â |
 Quantitative survey | 2558 | 6–83 | 45.4 | 13.3 |