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Table 1 Distribution of phase I (N s ) and II (n s ) samples in the 6 strata and sampling fractions expressed as percentages in parenthesis for Phase II

From: Crude incidence in two-phase designs in the presence of competing risks

 

Treatment protocol

 
 

Standard

Medium

High

 
 

n s /N s (%)

Total

No relapse

54/487 (11.1)

193/987 (19.6)

109/219 (49.8)

356/1693

Relapse

21/28 (75.0)

147/186 (79.0)

77/92 (83.7)

245/306

Total

75/515

340/1173

186/311

601/1999