Skip to main content

Advertisement

Table 8 Two-stage least squares estimates for outcomes with complete case data, adjusted for measured and unmeasured characteristics

From: Outcomes after early and delayed rehabilitation for exacerbation of chronic obstructive pulmonary disease: a nationwide retrospective cohort study in Japan

  90-day readmission Barthel index at discharge Log-transformed length of stay
Coefficient (95% CI) P value Coefficient (95% CI) P value Coefficient (95% CI) P value
Ordinary least square; −0.0348 (−0.0561, −0.0135) 0.0014 −0.0009 (−0.0204, 0.0187) 0.9298 −0.4134 (−0.4551, −0.3718) < 0.0001
Two-stage least square −0.039 (−0.1867, 0.1088) 0.6052 0.0664 (−0.0796, 0.2125) 0.3727 −0.9087 (−1.1725, −0.6450) < 0.0001
 F statistics 134.8 < 0.0001 117.2 < 0.0001 134.8 < 0.0001
 Hausman specification test   0.956   0.339   < 0.0001
  1. CI Confidence interval