Year after graduation | Cohorts (years of graduation) | Statistical tests | ||||
---|---|---|---|---|---|---|
1974–1983 | 1993–2002 | 2005–2015 | All cohorts | Linear trend (χ21, p) | Heterogeneity (χ22, p) | |
Year 1 | 0.6% | 0.9% | 1.5% | 1.0% | 49.8, < 0.001 | 52.6, < 0.001 |
Year 3 | 0.7% | 1.1% | 0.9% | 0.9% | 2.9, 0.09 | 11.9, 0.003 |
Year 5 | 0.7% | 1.0% | 0.9% | 0.9% | 1.0, 0.32 | 2.8, 0.25 |