We told you Thursday about the Trump administration’s announcement that average premiums for benchmark Obamacare plans will fall 1.5 percent next year, but analyst Charles Gaba says the story is a bit more complicated. According to Gaba’s calculations, average premiums for all individual health plans will rise next year by 3.1 percent.

The difference between the two figures is produced by two very different datasets. The Trump administration included only the second-lowest-cost Silver plans in 39 states in its analysis, while Gaba examined all individual plans sold in all 50 states.