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

Table 5 Comparison of readability of answers from Google Gemini with the 8^th grade reading level, mean ± SD

Subfield	GFI	P value	FKGL	P value
Risk factors	14.54 ± 0.46	0.002	10.73 ± 0.16	0.001
Clinical manifestation	13.06 ± 0.42	0.002	9.81 ± 0.68	0.043
Diagnosis	17.71 ± 0.30	< 0.001	13.54 ± 0.24	< 0.001
Treatment	19.93 ± 1.44	< 0.001	15.65 ± 1.06	< 0.001
Prevention	15.63 ± 1.96	< 0.001	11.71 ± 1.82	< 0.001
Prognosis	14.81 ± 0.62	0.003	12.37 ± 0.27	0.001
Overall	17.22 ± 2.86	< 0.001	13.32 ± 2.44	< 0.001

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