Read e-book online Applied Missing Data Analysis (Methodology In The Social PDF

By Craig K. Enders PhD

ISBN-10: 1606236393

ISBN-13: 9781606236390

Jogging readers step-by-step via advanced innovations, this publication interprets lacking info thoughts into anything that utilized researchers and graduate scholars can comprehend and make the most of of their personal learn. Enders explains the reason and procedural information for optimum probability estimation, Bayesian estimation, a number of imputation, and types for dealing with lacking now not at random (MNAR) info. Easy-to-follow examples and small simulated information units illustrate the thoughts and make clear the underlying rules. The significant other site (www.appliedmissingdata.com) comprises info documents and syntax for the examples within the ebook in addition to up to date details on software program. The booklet is out there to significant researchers whereas supplying a degree of aspect that may fulfill quantitative experts.

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For example, Duncan et al. 12 to examine the change in alcohol use over the 5-year period between ages 12 and 17. Like other planned missingness designs, the cohort-sequential design yields MCAR data. The cohort-sequential design is extremely useful for developmental research but has an important limitation. Unlike the other designs in this section, the cohort-sequential design includes variable pairs that are completely missing. 12 yields missing data for six variable pairs: ages 12 and 15, 12 and 16, 12 and 17, 13 and 16, 13 and 17, and 14 and 17.

This association can occur for two reasons. First, it is possible that the probability of missing data is directly related to the incomplete outcome variable. For example, if the company terminates a number of individuals for poor performance prior to their 6-month evaluation, then there is a direct relationship between job performance and the propensity for missing data. However, an association between job performance and missingness can also occur because these variables are mutually correlated with an unmeasured variable.

A check mark denotes complete data. 5. Missing Data Pattern for a Three-Form Design with Eight Questionnaires Item Sets X A B C Form Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 1 2 3 ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ — ✓ ✓ — ✓ — ✓ ✓ — ✓ — ✓ ✓ — ✓ ✓ Items 10 10 10 10 10 10 10 10 Note. A check mark denotes complete data. X and the remaining five items to set A). Graham et al. (1996) used a computer simulation study to investigate this issue and found that splitting the questionnaire across multiple item sets reduced the standard errors from a regression analysis.

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Applied Missing Data Analysis (Methodology In The Social Sciences) by Craig K. Enders PhD


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