The author is muddying the water for effect, that's why his explanation is confusing. To understand what he means, you should ignore the results expressed as pe

The author is muddying the water for effect, that's why his explanation is confusing. To understand what he means, you should ignore the results expressed as percentages and instead focus on 1:19 vs 1:99. Now, imagine a grid, where the unit on the x-axis is "No", vs "Yes" on the y-axis. Place both studies in terms of their respective No/Yes relationship. Study A: 1:19, 2:38, 3:47, ... Study B: 1:99, 2:198, 3:297, ... Can you picture the difference in their slopes?