The distribution of autistic traits across the autism spectrum: evidence for discontinuous dimensional subpopulations underlying the autism continuum

Table 5 Parameters of the dual Weibull-Weibull distribution model of the prevalence-true sample

Parameter	Result*	Bootstrap: 95% confidence interval
Parameter	Result*	Mean*	Lower bound	Upper bound
Model 7: Prevalence-true sample (N = 3973) -Log-likelihood = 13,821.11
Scale (η₁)	39.00	39.08	39.00	40.65
Shape (β₁)	7.30	6.85	6.16	8.21
Weight (w)	0.94	0.94	0.93	0.96
Threshold (θ)	34.20	34.18	33.20	35.75
Scale (η₂)	20.71	20.58	20.27	20.94
Shape (β₂)	2.84	2.86	2.77	2.94

*The result column shows the parameter values from the sample with the highest likelihood. The mean column shows the average parameter value from the 1000 resamples