Table 2.

Coefficients quantifying the pair-wise correlation of natural balance rates at two consecutive time intervals (all values are significant at p < 0.05 after Bonferroni’s correction for multiple comparisons)

Time interval	Pearson	Spearman	Kendall
1956–1960	0.81	0.78	0.64
1960–1970	0.87	0.83	0.66
1970–1980	0.88	0.86	0.71
1980–1990	0.83	0.76	0.58
1990–1999	0.80	0.72	0.55
1999–2009	0.75	0.79	0.60
2009–2019	0.65	0.66	0.48