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. Author manuscript; available in PMC: 2020 Nov 11.
Published in final edited form as: Int Stat Rev. 2018 Apr 25;86(3):571–597. doi: 10.1111/insr.12268

Table 2. Maximum likelihood estimates of the model parameters and their 95% CI based on the asymptotic GA and PB.

Parameter Estimate 95% CI (GA) 95% CI (PB)
β 1 –1.830 (–3.180,–0.480) (–3.131,–0.367)
β 2 0.118 (0.017, 0.220) (0.019, 0.226)
β 3 –0.334 (–0.562,–0.105) (–0.585,–0.103)
β 4 0.015 (–0.022, 0.052) (-0.025, 0.052)
β 5 –0.014 (–0.055, 0.027) (–0.056, 0.030)
σ 2 3.650 (2.378, 5.601) (2.272, 5.222)
ϕ 381.022 (225.948, 642.528) (220.593, 568.953)
τ 2/σ 2 0.157 (0.097, 0.253) (0.105, 0.253)
ψ 6.730 (3.571, 12.683) (3.484, 10.669)

CI, confidence intervals; GA, Gaussian approximation; PB, parametric bootstrap.