RECODE: The percentage of all students who reported they used snus during the past 30 days.

RECODE: The percentage of all students who reported they used dissolvable tobacco products such as Ariva, Stonewall, Camel orbs, Camel sticks, Marlboro sticks, or Camel strips during the past 30 days.

RECODE: The percentage of all students reported they smoked bidis during the past 30 days.

RECODE: The percentage of all students who reported they used heated tobacco products during the past 30 days

Numeric: Stratum for Variance Estimation