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Table 2 Parameters of the dual Weibull distribution models of the overall, male-only, and female-only samples

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

Parameter Result* Bootstrap: 95% confidence interval
Mean* Lower bound Upper bound
Model 1: Overall sample (N = 4717) -Log-likelihood = 17,219.28
 Scale (η1) 40.90 40.89 39.29 42.17
 Shape (β1) 7.08 7.14 5.96 8.36
 Weight (w) 0.82 0.82 0.78 0.85
 Threshold (θ) 31.50 31.53 29.60 33.20
 Scale (η2) 20.50 20.49 19.81 21.07
 Shape (β2) 2.89 2.89 2.79 3.01
Model 2: Male sample (N = 1701) -Log-likelihood = 6228.31
 Scale (η1) 39.59 39.52 36.62 41.66
 Shape (β1) 6.41 6.48 5.01 7.99
 Weight (w) 0.73 0.72 0.61 0.80
 Threshold (θ) 30.20 30.16 26.35 33.10
 Scale (η2) 21.91 21.86 20.15 23.05
 Shape (β2) 3.35 3.36 3.16 3.62
Model 3: Female sample (N = 3016) -Log-likelihood = 10,887.69
 Scale (η1) 41.75 41.62 39.31 43.35
 Shape (β1) 7.62 7.66 5.69 9.72
 Weight (w) 0.86 0.86 0.82 0.89
 Threshold (θ) 32.10 31.96 29.30 34.20
 Scale (η2) 19.63 19.60 18.83 20.26
 Shape (β2) 2.77 2.78 2.66 2.92
  1. *The result column shows the parameter values from the sample with the highest likelihood in the original data. The mean column shows the average parameter value from the 1000 resamples