Table 1 Relative frequencies (%) of choice of allocation scheme by randomization factors

Overall

(p_{chi-squared test} < 0.001)

Model-based information

on expected population-level effects

Time until death

Prevention

(n = 441)

Treatment

(n = 437)

Prevention

(p_{chi-squared test} < 0.001)

Treatment

(p_{chi-squared test} = 0.004)

Prevention

(p_{chi-squared test} = 0.77)

Treatment

(p_{chi-squared test} = 0.82)

No

Info^a

(n = 149)

Additional

Info^b

(n = 292)

No

info^a

(n = 144)

Additional

info^b

(n = 293)

Death within

5 years

(n = 227)

Death within

15 years

(n = 214)

Death within

5 years

(n = 231)

Death within

15 years

(n = 206)