## Cox Model

结局变量: NAFLD 时间变量: MONTH model: Surv( MONTH , NAFLD )~ CUNBAE.Z

观察数（人数） | 16173
事件发生数 | 2322

比例灾害模型

| 回归系数(coef) | 回归系数标准误 | z | 危险比(HR=exp(coef)) | 1/危险比 | 95%区间下限 | 95%区间上限 | P　值
CUNBAE.Z | 0.4114 | 0.0219 | 18.8265 | 1.5089 | 0.6627 | 1.4457 | 1.5750 | <0.0001

rsq = 0.0227, maxrsq = 0.9267 Log Likelihood （对数似然值）= -20943.8537109317 , AIC= 41889.7

| test | df | pvalue
Likelihood ratio test | 370.62760 | 1.00000 | 0.00000
Wald test | 354.44000 | 1.00000 | 0.00000
Score(log rank)test | 362.51315 | 1.00000 | 0.00000

比例灾害模型诊断

| chisq | df | p
CUNBAE.Z | 1.2514 | 1.0000 | 0.2633
GLOBAL | 1.2514 | 1.0000 | 0.2633

Somers' Rank Correlation for Censored Data

| C | Dxy | aDxy | SD | Z | P | n
Model | 0.6063 | 0.2126 | 0.2126 | 0.012 | 17.7445 | 0 | 16173

C: Harrell's C index; Dxy = 2(C - 0.5), Dxy is a U-statistic. SD: Standard error of Dxy, so, SE. for C = SD/2 Created by EmpowerStats (www.empowerstats.com) and R on 2025-09-16