1model,estimate,se,ci_low,ci_high2unadjusted (baseline): growth ~ hours,-0.13169790632300882,0.014619618827634278,-0.1603518326928757,-0.103043979953141953adjusted (main): growth ~ hours + skill_index,0.25353820594501253,0.009812212326345536,0.2343066231767153,0.272769788713309764"sensitivity: adjusted, full sample incl. negative hours",0.25222449623309495,0.00947885217664965,0.23364628735208254,0.270802705114107375sensitivity: adjusted + skill_index^2,0.25383792381516485,0.009844473118691516,0.23454311105575676,0.273132736574572936"sensitivity: adjusted, conventional SE",0.25353820594501253,0.0098410870694658,0.2342303088883248,0.272846103001700267