Model	Number of parameters	Log‐likelihood	AIC	BMD	BMDL	BMDU	Converged	Accepted AIC
Null	1	−24.15	50.30	NA	NA	NA	Yes
Full	6	−7.28	26.56	NA	NA	NA	Yes
Logistic	2	−10.01	24.02	159.94	103.38	228.63	Yes	Yes
Log‐logistic	3	−8.43	22.86	153.78	95.16	211.13	Yes	Yes
Log‐probit	3	−8.28	22.56	154.43	97.46	212.34	Yes	Yes
Weibull	3	−9.16	24.32	142.30	77.47	214.42	Yes	Yes
Gamma	3	−8.64	23.28	152.71	89.35	214.54	Yes	Yes
Two‐stage	3	−9.35	24.70	120.61	90.48	167.64	No	No