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How to Use a Monte Carlo Study to Decide on Sample Size and Determine Powerby: B. O. Muthen, L. K. Muthen
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Notes for this article"I'm curious to learn how the values of -2, -1.5, -1, and zero map onto the proportions of missingness that you report on page 605. In other words, how does one work backwards from an expected amount of missing data per wave of measurement to obtain the proper regression weights to use in the MODEL MISSING section of the syntax?" "The values are logits. To turn them into probabilities, use the formula p = 1 / (1 + exp (-logit)) for y1 the logit of -2 results in the probability of 0.12. For y2-y4, the logit is based on the covariate also. The logit for y2 is logit = -1.5 + bx; For x=1, logit = -1.5 + 1*1 = -.5 The probability for a logit of -.5 is .38." http://www.statmodel.com/discussion/messages/22/449.html?1183045053
-2 =0.119202922, -1.5 =0.182425524, -1 =0.268941421, 0 =0.5, 0.5 =0.622459331,
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