Table 4.
Performance of the recurrent neural network model after ablation of the feature set
| Outcome | Models | Area Under the Receiver Operating Characteristic Curve (95% Confidence Interval) | Δ Area Under the Receiver Operating Characteristic Curve | Area Under the Precision-Recall Curve (95% Confidence Interval) | Δ Area Under the Precision-Recall Curve |
|---|---|---|---|---|---|
| IDH-1 | Remove set A | 0.94 (0.94 to 0.94) | 0 | 0.62 (0.61 to 0.62) | 0 |
| Remove set B | 0.93 (0.93 to 0.93) | 0.01 | 0.60 (0.59 to 0.60) | 0.02 | |
| Remove set C | 0.89 (0.89 to 0.89) | 0.05 | 0.44 (0.44 to 0.44) | 0.18 | |
| Remove set D | 0.93 (0.93 to 0.93) | 0.01 | 0.60 (0.60 to 0.61) | 0.01 | |
| Remove set E | 0.94 (0.94 to 0.94) | 0.001 | 0.61 (0.61 to 0.62) | 0.002 | |
| Remove set F | 0.94 (0.94 to 0.94) | 0 | 0.62 (0.61 to 0.62) | 0 | |
| IDH-2 | Remove set A | 0.87 (0.87 to 0.87) | 0.001 | 0.78 (0.78 to 0.78) | 0.002 |
| Remove set B | 0.86 (0.86 to 0.86) | 0.01 | 0.76 (0.76 to 0.76) | 0.02 | |
| Remove set C | 0.73 (0.73 to 0.74) | 0.14 | 0.57 (0.56 to 0.57) | 0.22 | |
| Remove set D | 0.86 (0.86 to 0.86) | 0.01 | 0.77 (0.77 to 0.78) | 0.01 | |
| Remove set E | 0.87 (0.87 to 0.87) | 0.001 | 0.78 (0.78 to 0.78) | 0.001 | |
| Remove set F | 0.87 (0.87 to 0.87) | −0.001 | 0.78 (0.78 to 0.78) | 0 | |
| IDH-3 | Remove set A | 0.79 (0.79 to 0.79) | 0.001 | 0.51 (0.51 to 0.51) | 0.003 |
| Remove set B | 0.77 (0.77 to 0.78) | 0.02 | 0.48 (0.48 to 0.48) | 0.03 | |
| Remove set C | 0.70 (0.70 to 0.71) | 0.09 | 0.38 (0.37 to 0.38) | 0.14 | |
| Remove set D | 0.78 (0.77 to 0.78) | 0.01 | 0.49 (0.49 to 0.49) | 0.02 | |
| Remove set E | 0.79 (0.79 to 0.79) | 0.002 | 0.51 (0.51 to 0.51) | 0.003 | |
| Remove set F | 0.79 (0.79 to 0.79) | 0 | 0.51 (0.51 to 0.51) | 0.002 |
IDH-1, intradialytic hypotension defined as nadir systolic BP <90 mm Hg; IDH-2, intradialytic hypotension defined as decrease in systolic BP ≥20 mm Hg and/or decrease in mean arterial pressure ≥10 mm Hg on the basis of BP at initial time point; IDH-3, intradialytic hypotension defined as decrease in systolic BP ≥20 mm Hg and/or decrease in mean arterial pressure ≥10 mm Hg on the basis of BP at prediction time point. Each set contains features as follows: A, age and sex; B, hemodialysis-related features; C, vital signs; D, comorbidities; E, laboratory findings; and F, medications.