Table 1.

Baseline demographics and clinical characteristics of ECOG-ACRIN5597 comparing lung cancer recurrence with disease-free patient population

VariablesaCancer recurrencebCancer freePc
N122413
Age (mean ± SD)67.4 ± 8.666.3 ± 6.10.17
Sex (male)61 (50%)217 (53%)0.62
Staged
 Ia82 (67%)302 (75%)0.07
 Ib with chemo3 (2%)16 (4%)
 Ib without chemo37 (30%)83 (21%)
Smoking status
 Current44 (36%)116 (28%)0.08
 Formere64 (52%)263 (64%)
 Neverf14 (12%)34 (8%)
Selenium use90 (74%)268 (65%)0.07
Time to eventg35 (20, 56)
Time to censorg69 (50, 94)
  • aAll demographics represent baseline information.

  • bIncludes second primary, local, and distant recurrence.

  • cX2 was used for all variables except age that was evaluated by Student t test.

  • dStage was missing from 12 cancer-free participants.

  • eQuit ≥ 1 y before study.

  • fLess than 100 cigarettes smoked.

  • gMedian months (Q1, Q3).