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. 2011 Apr;13(4):240–245. doi: 10.1111/j.1477-2574.2010.00277.x

Table 3.

Survival analysis for different subgroups of patients included into the study: number of patients, median survival with 95% confidence interval (CI), actuarial 3- and 5-year survival and P-value of the log rank test

Variable n Median survival (Months) 95% CI 3-y surv (%) 5-y surv (%) P
Overall 62 21.9 18.2–25.5 30 15

LN 0.032

 N0 32 41.9 13.3–70.4 50 25

 N+ 21 22.7 18.2–27.2 0 0

LN harvested 0.001

 0 LN 9 3 1.0–5.9 0 0

 1–3 LN 18 18.5 12.7–24.2 25 16

 >3 LN 35 28.8 17.0–46.6 41 16

Positive LN 0.721

 1–3 N+ 14 22.7 10.1–35.3 0 0

 >3 N+ 7 25 0 0

Negative LN 0.152

 1–3 N0 examined 14 18.5 13.1–23.8 31 20

 >3 N0 examined 18 43.1 25.6–60.5 68 27

LNR 0.031

 ≤0.25 42 26 16.2–35.8 44 22.5

 >0.25 9 22.7 1.0–45.0 0 0

LN, lymph node; LNR, lymph node ratio.