a trend towards significanceP = 0.081
The likelihood ratio for for-profit vs not-for-profit status was not significant for any of the quartiles; however, there was a trend towards significance for quartile 4 (Q4: LR = 3.05, P = 0.081), implying possible concentration of for-profits in the bottom quartile (Other quartiles Q1: LR = 1.51, P = 0.219; Q2: LR = 0.51, P = 0.474; Q3: LR = 0.95, P = 0.329).