Table 3.
Slope of linear regressions of annual cumulative proportions of WR for the major 6 countries.
| T & F Men | 1920-1939 | 1950-1969 | 1970-1989 | 1990-2008 |
|---|---|---|---|---|
| USA | 0.005 | 0.0071 | 0.0027 | 0.0013 |
| RUS | 0.0033 | 0.0022 | 0.0003 | |
| ALL | 0.0011 | 0.0003 | 0.0005 | 0 |
| GDR | 0.0015* | - | ||
| CHN | 0.0002 | 0.0003 | ||
| GBR | 0.0002 | 0.0005* | 0.0013 | 0.0002 |
| T & Women | ||||
| USA | 0.0007 | 0.0005 | 0.0022 | 0.0006 |
| RUS | 0.0002 | 0.0047 | 0.0041 | 0.0018 |
| ALL | 0.0031 | 0.0005 | 0.0005 | 0 |
| GDR | 0.0004 | 0.0071 | - | |
| CHN | 0.0002 | 0.0002 | 0.0009 | |
| GBR | 0.0012 | 0.0004 | 0.0005* | 0.0005* |
| Swimming Men | ||||
| USA | 0.0037 | 0.0075 | 0.0063 | 0.0031 |
| RUS | 0.0009 | 0.0012 | 0.0005 | |
| ALL | 0.0007 | 0.0001 | 0.0007 | 0.0003* |
| GDR | 0.0007 | 0.0042 | - | |
| CHN | 0 | 0.0005 | ||
| AUS | 0.0002 | 0.0024 | 0.0007* | 0.0022 |
| Swimming Women | ||||
| USA | 0.0043* | 0.008 | 0.0041 | 0.0015 |
| RUS | 0.0006 | 0.0006 | 0 | |
| ALL | 0.0007 | 0 | 0 | 0.0006* |
| GDR | 0.0008 | 0.0091 | - | |
| CHN | 0.0001 | 0.0012 | ||
| AUS | 0.0003* | 0.0022 | 0.0010* | 0.0017* |
P <0.001 for all the results except those indicated
* T & F = Track & Field