2021 NSDUH: Guide to Comparison of Population Percentages Across Geographies

Learn how to access and use p-value tables to compare preliminary state-level estimates from the 2021 National Survey on Drug Use and Health (NSDUH). The p-value tables accompany the 2021 NSDUH State Estimates of Substance Use and Mental Disorders which contain 35 measures of substance use and mental health across the nation, four Census regions, 50 states, and the District of Columbia. The guide describes the files and how to use the p-value tables to determine whether differences between two geographic areas are statistically significant.