Recent breeding history of dog breeds in Sweden: modest rates of inbreeding, extensive loss of genetic diversity and lack of correlation between inbreeding and health.

In 1995, 5.6 generations have passed in the unhealthy group and 5.4 in the healthy group (t-test gives p = 0.64), and in 2010, there is a small difference between groups with on average 6.4 generations in the unhealthy group versus 7.5 in the healthy group although not fully statistically significant (t-test gives p = 0.06).

also in 17 other papers