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. Author manuscript; available in PMC: 2019 Sep 26.

Published in final edited form as: Respiration. 2018 Sep 26;96(5):434–445. doi: 10.1159/000490258

Figure 4. — Cohort B Bland-Altman Plot for FEV1 % of Predicted for a) Q model, b) SC18 model, and c) SC19 model. Difference is predicted postoperative value for that model minus actual postoperative value. Mean bias and 95% LOA are the horizontal black dashed lines. The grey zones around each represent the range of possible error in the estimate due to sampling error. The solid blue line represents the regression of the difference between predicted and observed as a function of the actual postoperative value. Blue dashed line represents the regression based 95% LOA.

Blue dots are patients that had surgery with observed data. Red dots are patients that had predictions made but did not have surgery because of limited pulmonary reserved; for these patients the “actual” postoperative values are imputed.

Figure 4. — Cohort B Bland-Altman Plot for FEV1 % of Predicted for a) Q model, b) SC18 model, and c) SC19 model. Difference is predicted postoperative value for that model minus actual postoperative value. Mean bias and 95% LOA are the horizontal black dashed lines. The grey zones around each represent the range of possible error in the estimate due to sampling error. The solid blue line represents the regression of the difference between predicted and observed as a function of the actual postoperative value. Blue dashed line represents the regression based 95% LOA.

Blue dots are patients that had surgery with observed data. Red dots are patients that had predictions made but did not have surgery because of limited pulmonary reserved; for these patients the “actual” postoperative values are imputed.