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Topic Review - Newest First (only newest 5 are displayed)

mehwish

Re: Sample Size

use the formula :
p+- z(sd/underroot n) = e

mehwish

Re: Sample Size

u want to calculate it separately or together

karthik

Sample Size

Dear Friends

I want to calculate sample size for the three proportions

I have proportion of Best corrected visual Acuity for three types of surgeries

ECCE : 87
SICS : 91
PHACO: 96

Now I want to calculate sample size

Please help me

Karthik Prakash