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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+ 

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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