我最初使用 glm 包做了一个逻辑模型,但想纠正分离,所以我使用了 logistf 函数,现在我正在尝试重做我的绘图。我不确定如何使用 logistf 对象制作如下图。很多包似乎不支持它,我尝试使用 sjPlot 包的 plot_model() 函数,该函数为预测概率绘制一个点,但不会像使用 glm 对象那样自动添加误差线。我怎样才能绕过这个?是否有另一个包可以使这更容易,或者有没有办法手动添加错误栏?
我希望添加误差线的绘图代码是:
sjPlot::plot_model(lr3, type="int", mdrt.values = "meansd", show.values = TRUE, value.offset = .3)
我的模型 lr3 的输出是:
logistf(formula = foodbank_cv ~ wave + ff_country + relevel(race_grp,
ref = "White") + sex_cv + age_r + relevel(numchildren,
ref = "None") + wave * ff_hcondhas + relevel(carer,
ref = "Not") + sempderived + wave * cd_ff_furlough +
log(ff_hours) + qual + num + relevel(keyworksector, ref = "Not keyworker") +
ca_clinvuln_dv + freemeals + ca_blbenefits1 + log(hhincome_week),
data = data, firth = TRUE, family = binomial(link = "logit"))
Model fitted by Penalized ML
Coefficients:
coef se(coef) lower 0.95 upper 0.95 Chisq p method
(Intercept) -5.237542354 0.46736532 -6.23016284 -4.30807241 Inf 0.000000e+00 2
wave5 -0.377956413 0.32598420 -1.07410577 0.28545651 1.232122e+00 2.669947e-01 2
wave7 -0.929934987 0.40813067 -1.84652632 -0.12926473 5.260388e+00 2.181615e-02 2
ff_country2 -0.118780142 0.33317501 -0.86893024 0.51197342 1.196576e-01 7.294061e-01 2
ff_country3 0.393456771 0.25097814 -0.15010616 0.88210537 2.077828e+00 1.494527e-01 2
ff_country4 -0.219066153 0.43493435 -1.23008781 0.57774984 2.481153e-01 6.184053e-01 2
relevel(race_grp, ref = "White")Asian or Asian British 0.882833792 0.22906054 0.39628625 1.33641305 1.183859e+01 5.801581e-04 2
relevel(race_grp, ref = "White")Black or Black British 1.759374627 0.27942672 1.16321835 2.29702048 2.678592e+01 2.272869e-07 2
relevel(race_grp, ref = "White")Mixed 1.786978145 0.27773294 1.19285979 2.32350705 2.763841e+01 1.462461e-07 2
relevel(race_grp, ref = "White")Other -0.345106379 1.38712570 -5.19048868 1.62733736 6.509258e-02 7.986208e-01 2
ff_hcondhas 0.691244774 0.26776923 0.14697164 1.25269746 6.228205e+00 1.257311e-02 2
Method: 1-Wald, 2-Profile penalized log-likelihood, 3-None
我用来制作饥饿和种族情节的代码。我进行了一些手动编辑以使其看起来更好,但这是我理想中希望我的情节看起来的样子:
plot_model(model12, type = "pred", terms = c("race_grp"), mdrt.values = "meansd", axis.textsize = .3, wrap.labels = 5)+ theme_sjplot2() + scale_color_sjplot("simply") + ggplot2::labs(title= "Predicted probabilities of Hunger", x= "Race", y="Percentage")