Introductory Biostatistics

12.29 p 1 ¼ 0 :57:(a)N¼364, 182 cases and 182 controls;(b)N¼480, 120
cases and 350 controls;(c)m¼81 discordant pairs andM¼158 case–
control pairs.

12.30 N¼

4

½lnð 1 : 5 ފ^2

ð 1 : 96 þ: 84 Þ^2

¼ 192 ;96 cases and 96 controls

ANSWERS TO SELECTED EXERCISES 529