{'fraction_non_alphanumeric': 0.027439024390243903, 'fraction_numerical': 0.019817073170731708, 'mean_word_length': 5.404878048780488, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
The National Survey on Drug Use and Health Mental Health Surveillance Study: calibration study design and field procedures

The Mental Health Surveillance Study (MHSS) is an ongoing initiative by the Substance Abuse and Mental Health Services Administration (SAMHSA) to monitor the prevalence of serious mental illness (SMI) among adults in the USA. In 2008, the MHSS used data from clinical interviews to calibrate mental health data from the National Survey on Drug Use and Health (NSDUH) for estimating the prevalence of SMI based on the full NSDUH sample. The clinical interview used was the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders 4th edition (DSM‐IV; SCID). NSDUH interviews were administered via audio computer‐assisted self‐interviewing (ACASI) to a nationally representative sample of the population aged 12 years or older. A total of 46 180 NSDUH interviews were completed with adults aged 18 years or older in 2008. The SCID was administered by mental health clinicians to a sub‐sample of 1506 adults via telephone. This paper describes the MHSS calibration study procedures, including information on sample selection, instrumentation, follow‐up, data quality protocols, and management of distressed respondents. Copyright © 2010 John Wiley & Sons, Ltd.