season 2008/2009 | season 2009/2010 | season 2010/2011 | |||||||
---|---|---|---|---|---|---|---|---|---|
Adjusted | 95% | p value | Adjusted | 95% | p value | Adjusted | 95% | p value | |
odds | Confidence | odds | Confidence | odds | Confidence | ||||
ratios | Interval | ratios | Interval | ratios | Interval | ||||
Age (years) | |||||||||
Age<60 | 1 | 1 | 1 | ||||||
Age≥60 | 3.659 | 3.315-4.037 | <0.001 | 3.865 | 3.499-4.270 | <0.001 | 5.496 | 4.984-6.060 | <0.001 |
Educational level | |||||||||
junior high school or above | 1 | 1 | |||||||
primary school | 1.136 | 0.996-1.294 | 0.057 | 1.252 | 1.091-1.437 | 0.001 | |||
illiteracy | 1.384 | 1.109-1.727 | 0.004 | 1.508 | 1.201-1.894 | <0.001 |