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Patterns of Marijuana Use by White, Urban High School Sophomores
註釋2) To determine relationships between the student's perceived probability of his own use of marijuana during high school and the sex of the student, the total family income level of the student's family, the grade point average of the student, the availability of marijuana, the student's perception of his or hers parents' disciplinary attitudes, the student's attitude toward legalization of marijuana, the association of the student with friends that use marijuana, and the use of other drugs.