Table 1 Variables assignment and analysis results of Cox’s regression models for NPC
From: Circulating tumor cells: a valuable marker of poor prognosis for advanced nasopharyngeal carcinoma
Analysis type | Factor | Grouping and assignment | Available cases | P-value | HR | 95.0% CI for HRs | ||
|---|---|---|---|---|---|---|---|---|
Death | Censored | Lower | Upper | |||||
Univariate | Age | Continuous variable | 71 | 299 | .002 | 1.03 | 1.01 | 1.05 |
Gender | 1 = “male”; 2 = “female” | .017 | .36 | .16 | .83 | |||
Clinical stage | 1 = “I”; 2 = “II”; 3 = “III”; 4 = “IV” | 71 | 295 | .001 | 3.14 | 1.56 | 6.35 | |
EBV-DNA | Continuous variable | 64 | 251 | .001 | 1.00 | 1.00 | 1.00 | |
CTCs | Continuous variable | 71 | 299 | .000 | 1.00 | 1.00 | 1.00 | |
Multivariate | Age | Continuous variable | 64 | 248 | .003 | 1.03 | 1.01 | 1.06 |
Gender | 1 = “male”; 2 = “female” | .118 | .51 | .22 | 1.19 | |||
Clinical stage | 1 = “I”; 2 = “II”; 3 = “III”; 4 = “IV” | .002 | 3.14 | 1.54 | 6.41 | |||
EBV-DNA | Continuous variable | .058 | 1.00 | 1.00 | 1.00 | |||
CTCs | Continuous variable | .001 | 1.00 | 1.00 | 1.00 | |||