Scatter plot quadrant | Year (%) | Χ 2 | Pvalue | ||
---|---|---|---|---|---|
2005 | 2007 | 2009 | |||
High-high | 2.55 (7/275) | 0.73 (2/275) | 0.00 (0/268) | 8.81 | 0.013 |
High-low | 1.09 (3/275) | 0.36 (1/275) | 0.37 (1/268) | 1.57 | 0.456 |
Low-low | 19.27 (53/275) | 10.55 (29/275) | 1.49 (4/268) | 45.61 | 0.000 |
Low-high | 8.36 (23/275) | 7.27 (20/275) | 3.36 (9/268) | 6.30 | 0.043 |