inversely correlated

"I began to use this metric as another informal [literary] quality litmus test: how big an entourage [the novelist] turned up with was often inversely correlated with the [quality of her book]. [One author] always had a large team in tow. Not only that, we knew about her visits weeks ahead of time, because her security detail sent a team of bomb-sniffing dogs well ahead of each one."
~~ from Where the Money Is: Value Investing in the Digital Age by Adam Seessel