Exploring the performance of large language models on hepatitis B infection-related questions: A comparative study

Table 4 Comparison of readability of answers from ChatGPT-4.0 with the 8^th grade reading level, mean ± SD

Subfield	GFI	P value	FKGL	P value
Risk factors	14.79 ± 0.24	< 0.001	11.45 ± 0.35	0.003
Clinical manifestation	11.05 ± 0.89	0.027	9.06 ± 0.73	0.130
Diagnosis	14.40 ± 0.42	0.001	11.28 ± 0.47	< 0.001
Treatment	18.18 ± 1.45	< 0.001	14.57 ± 1.27	< 0.001
Prevention	16.49 ± 1.27	< 0.001	13.49 ± 1.09	< 0.001
Prognosis	16.10 ± 0.52	0.001	13.18 ± 0.05	< 0.001
Overall	16.39 ± 2.38	< 0.001	13.19 ± 1.96	< 0.001

GFI: Gunning Fog index; FKGL: Flesch-Kincaid grade level.