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Table 4 Groups of national raking margins and corresponding weighting methods

From: National weighting of data from the Behavioral Risk Factor Surveillance System (BRFSS)

Method Margins Categories
1 1–8 1: Sex by Age
2: Race/Ethnicity
3: Education
4: Marital Status
5: Home Ownership
6: Sex by Race/Ethnicity
7: Race/Ethnicity by Age
8: Phone Usage
2 1–8 + 9 1: Sex by Age
2: Race/Ethnicity
3: Education
4: Marital Status
5: Home Ownership
6: Sex by Race/Ethnicity
7: Race/Ethnicity by Age
8: Phone Usage
9: State
3 1–8 + state with 3 cross classifications 1: Sex by Age
2: Race/Ethnicity
3: Education
4: Marital Status
5: Home Ownership
6: Sex by Race/Ethnicity
7: Race/Ethnicity by Age
8: Phone Usage
9: State
10: Age by state
11: Sex by state
12: Race/ethnicity by state
4 1–8 with collapsed categoriesa 1: Sex by Age
2: Race/Ethnicity
3: Education
4: Marital Status
5: Home Ownership
6: Sex by Race/Ethnicity (collapsed categories)
7: Race/Ethnicity by Age (collapsed categories)
8: Phone Usage
5 1–8 + state with collapsed categories 1: Sex by Age
2: Race/Ethnicity
3: Education
4: Marital Status
5: Home Ownership
6: Sex by Race/Ethnicity (collapsed categories)
7: Race/Ethnicity by Age (collapsed categories)
8: Phone Usage
9: State
6 1–8 + state with 3 cross classifications with collapsed categoriesb 1: Sex by Age
2: Race/Ethnicity
3: Education
4: Marital Status
5: Home Ownership
6: Sex by Race/Ethnicity
7: Race/Ethnicity by Age
8: Phone Usage
9: State
10: Age by state (collapsed categories)
11: Sex by state
12: Race/ethnicity by state (collapsed categories)
  1. aIn Methods 4–6, margins 6 and 7 were collapsed to achieve minimum sample sizes of 300 or minimum sample percentages of 5.0%. Race/ethnicity in margin 6 was collapsed to non-Hispanic White and Other for males; non-Hispanic White, non-Hispanic Black, and Other for females. In margin 7, race/ethnicity was collapsed to non-Hispanic White and Other
  2. bMargins 10 and 12 were collapsed within region to achieve minimum sample sizes of 250 or minimum sample percentages of 5.0%. The age categories of 18–24 and 25–34 were collapsed together in margin 10 for 16 states. In margin 12, all race/ethnicity categories were collapsed together for two states (Maine and Vermont)