Table 2.

Prognostic measures of ChatGPT-4.

	In-hospital mortality	Poor Neurological Outcome
Prevalence %, (95%CI)	43.3 (39.7–47.1)	54.3 (50.5–58.0)
Sensitivity %, (95%CI)	62.8 (57.1–68.2)	87.9 (84.2–90.9)
Specificity %, (95%CI)	91.3 (88.2–93.9)	49.1 (43.5–54.6)
Positive likelihood ratio, (95%CI)	7.25 (5.2–10.1)	1.73 (1.5–1.9)
Negative likelihood ratio, (95%CI)	0.41 (0.4–0.5)	0.25 (0.2–0.3)
Odds ratio, (95%CI)	17.79 (11.7–26.9)	6.97 (4.8–10-1)
Positive predictive value %, (95%CI)	84.7 (79.4–89.1)	67.2 (62.9–71.3)
Negative predictive value %, (95%CI)	76.2 (72.2–80.0)	77.3 (71.0–82.8)

Table 2. Performance of ChatGPT-4 for the prediction of in-hospital mortality and poor neurological at hospital discharge (Cerebral Performance Category Scale 3–5 including death).

Abbreviations: ChatGPT-4 Chat Generative Pre-Trained Transformer 4, CI confidence interval.