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Table 2 Characteristics of the covariates in Dataset lung [Mean ± SD or n (%)]

From: A comparative study of forest methods for time-to-event data: variable selection and predictive performance

Characteristics Total(n = 167)
inst (institution code)
 1 28 (16.8)
 2 4 (2.4)
 3 12 (7.2)
 4 4 (2.4)
 5 7 (4.2)
 6 12 (7.2)
 7 7 (4.2)
 10 4 (2.4)
 11 13 (7.8)
 12 16 (9.6)
 13 13 (7.8)
 15 6 (3.6)
 16 10 (6.0)
 21 8 (4.8)
 22 13 (7.8)
 26 4 (2.4)
 32 6 (3.6)
sex
 male 103 (61.7)
 female 64 (38.3)
ph.ecog (ECOG performance score rated by physician)
 asymptomatic 47 (28.1)
 symptomatic but completely ambulatory 81 (48.5)
 in bed < 50% of the day 38 (22.8)
 in bed > 50% of the day but not bedbound 1 (0.6)
age 62.57 ± 9.21
ph.karno (Karnofsky performance score rated by physician) 82.04 ± 12.78
pat.karno (Karnofsky performance score rated by patient) 79.58 ± 15.10
meal.cal (Calories consumed at meals) 929.13 ± 413.49
wt.loss (Weight loss in last six months) 9.72 ± 13.38