1model,estimate,se,ci_low,ci_high,n,rmse2unadjusted: y ~ hours (HC1),-0.13518960504279864,0.013896968221774055,-0.16242716225177342,-0.10795204783382387,1200,3.8609356507658913adjusted (main): y ~ hours + skill (HC1),0.25222449623309495,0.00947885217664965,0.23364628735208254,0.27080270511410737,1200,1.97732292723474064"adjusted, conventional SE",0.25222449623309495,0.009627270798215685,0.2333362934392722,0.2711126990269177,1200,1.97732292723474065sensitivity: main excl. negative hours (HC1),0.25353820594501253,0.009812212326345536,0.2343066231767153,0.27276978871330976,1188,1.97585718288232686sensitivity: + skill^2 (HC1),0.25225435228148574,0.009488048505738672,0.23365811892666888,0.2708505856363026,1200,1.97728369213776067