Review quiz

What is the difference between the expB and the odds ratio in SPSS printouts?

• ExpB is for linear regression

• The odds ratio is for linear regression

• There is no difference - the expB is the odds ratio

• None of the above

How do you know what the coding of your outcome variable is?

• It is the higher number compared to the lower number

• You assign 0 and one with 0 as the reference

• You check the dependent variable encoding in your SPSS printout

• All of the above

What factor determines the type of regression analysis?

• The exposure variable

• The outcome variable

• Both the outcome and the exposure variable

• All of the above

The BLANK is the most important way to start to any data analysis.

The beta coefficient in mulitple linear regression explains.....

• The variation in the exposure variable explained by the outcome variable

• The variation in the outcome variable explained by the exposure variable.

• The variation in the outcome variable explained by the exposure variable in units

• All of the above

What is the difference between a standardized and unstandardized Beta coefficient?

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What is included in a classic Table 1?

• Descriptive statistics

• The data displayed in columns by the primary comparator

• Means, standard deviations, and frequencies

• All of the above

In an SPSS printout with more than 2 levels, how do you know which is the reference category?

• It is the first in the category

• It is the last in the category

• In the categorical variable coding it appears first

• In the categorical variable coding it has all 0 s in the columns

Computer-based model selection is better than investigator-based model selection.

• True

• False

If your sample size is small in one group in a variable what are your options to optimize your analysis?

• Delete that group

• Leave it because it reflects the true sample size

• Combine it with another similar group

• All of the above