Skewing of Home / Away records this year

[DallasMaverick]

I’m looking over teams’ won-loss records at home and away, and it strikes me as strange this year.

I’m used to seeing big disparities. In past years, it wasn’t unusual to see even bad teams with winning home records. If I remember correctly, the NBA historically has the highest home winning percentage of any of the professional leagues.

But this year, even dominant teams seem to have lots of home losses.

Has anyone done an analysis?

And if we’re trending back towards parity, then why?