Table 4.

The estimated coefficients, odds ratio, and P value of each feature in the logistic regression model, with using the chatbot for nontherapeutic purposes as the dependent variable.a

Feature	Estimated coefficients (SE)	Odds ratio (95% CI)	P value
Gender	6.28e–02 (2.98e–02)	1.0648 (1.0335-1.0970)	.09
Age	–1.66e–02 (1.05e–02)	0.9835 (0.9733-0.9939)	.11
Duration of consultation	–3.31e–03 (1.81e–03)	0.9967 (0.9949-0.9985)	.07
Number of conversation rounds	–4.60e–02 (3.17e–02)	0.9550 (0.9252-0.9858)	.15
Average duration of each round	–3.89e–02 (2.20e–02)	0.9618 (0.9409-0.9892)	.03*
SD of time spent in each round	–2.31e–02 (1.22e–02)	0.9772 (0.9653-0.9892)	.05*
Rounds of continuous repetition of the same response (unclear or unknown)	4.56e–01 (6.24e–02)	1.5778 (1.4823-1.6793)	<.001**

^aMcFadden pseudo R²=0.2478434.

*P<.05.

**P<.001.