Cost structure for statistical analysis
Five Levels
Basic I
- t-tests
- Chisq-tests
- Descriptive stats
- Less than 5 variables to test against 2 groups
- Clean data by our standards
- Estimated time: 5hrs
Basic II
- Includes Basic I
- Up to 20 variables
- ANOVA
- Some categorical data
- Classical designs
- Regressions -- model building with variables given by investigator
- Data modification
- Estimated time: 20 hours
Intermediate I
- Includes Basic II
- Plus up to 30 variables
- Complicated repeated measures ANOVA
- Standard complex designs for categorical data
- Extensive modeling - variables to be defined by statistical methods
- A few multivariate techniques maybe necessary
- Some data modofication
- Estimated time: 45 hours
Advanced
- Includes Intermediate I
- Plus up to 50 variables
- Complicated repeated measures ANOVA
- Nonstandard designs
- Nonstandard complex designs for categorical data - research required
- Extensive modeling - variables to be defined by statistical methods
- Multivariate techniques should be performed
- Data modification
- Write stats section - research required
- Estimated time: 70-100 hours
Extensive Involvement
- Involvement in the study over several years
- Time and cost will be worked out with investigator
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