Subjects: ELEMENTARY schools -- United States; INTELLECT; REPEATED measures designUNITED States
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Subjects: NUTRITION policy; DATA analysis; HEALTHCALIFORNIA
Subjects: ELECTIONS & psychology; UNITED States elections; MEMORYUNITED States
Subjects: ABORTION laws; ABORTION & psychology; ABORTION in the United StatesUNITED States
Subjects: DISEASE risk factors; MORTALITY risk factors; STATISTICSUNITED States
Subjects: BLINDNESS; STATISTICAL significance; STATISTICSUNITED States
Subjects: MORTALITY; UNITED States census; CAUSES of deathUNITED States
Subjects: VETERANS' hospitals; STATISTICS; CROSS-sectional method
Subjects: STATISTICS; ARGENTINE politics & government; POLITICAL corruption
Subjects: CRIME statistics; STOP & frisk (Police method); ACTION & defense casesUNITED States