What is the sample size for NSDUH estimates?

Generally, the NSDUH sample size is around 68,000 individuals, although disruptions in 2020 reduced the number of households that could be interviewed. See the table below for exact numbers of completed interviews in the past few years.

Year	Valid completed interviews	Adolescents 12-17	Adults 18+
2023	67,679	14,279	53,400
2022	71,369	14,813	56,556
2021	69,850	13,270	56,580
2020*	36,284	6,337	29,947
2019	67,625	16,894	50,731
2018	67,791	16,852	50,939
2017	68,032	17,033	59,999
2016	67,942	17,109	50,833
2015	68,073	16,955	51,118

*In 2020, field operations were interrupted due to the Coronavirus 2019 pandemic, and responses were collected almost exclusively in Quarters 1 and 4

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