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Table 3 Detectable proportion with microalbuminuria/macroalbuminuria with various sample sizes

From: Etiology of Persistent Microalbuminuria in Nigeria (P_MICRO study): protocol and study design

Number of HIV-negative participants (N = 3000 HIV-positive participants)

Detectable proportion with micro-/macroalbuminuria among HIV-negative controls (RR = relative risk)

90% power

80% power

300

0.306 (RR = 1.31)

0.319 (RR = 1.25)

500

0.325 (RR = 1.23)

0.335 (RR = 1.19)

750

0.336 (RR = 1.19)

0.345 (RR = 1.16)

1000

0.343 (RR = 1.17)

0.350 (RR = 1.14)

  1. Bolded numbers on far left (750) for each of these tables reflect our chosen final sample size for number of HIV-negative participants to be enrolled