When two versions of an instrument are found to be discrepant in the reported rates of service use, as we found in the NLAAS randomized trial, the service use status that would be reported by a respondent under the traditional instrument is missing for respondents assigned to the modified instrument, and vice versa.
The NLAAS data used in this analysis were provided by the Center for Multicultural Mental Health Research at the Cambridge Health Alliance.
Table 1: Comparison for Demographics between Traditional and Modified Versions of NLAAS Instrument Total Traditional Modified (N = 3,499) (N = 1,150) p-Value * Gender: male 45.
The nonexperimental version of the survey instrument used in the NLAAS is essentially the same as the instruments used in NCS-R and NSAL, with only minor modifications in some questions that do not affect the service use questions directly.
In 2002-2003, the NLAAS surveyed a nationally representative sample of Latinos and Asian Americans, aged 18 and above, residing in households in the United States.
The NLAAS shares with the CPES common core sections, including the World Mental Health Survey Initiative version of the World Health Organization Composite International Diagnostic Interview (WMH-CIDI, Kessler and Ustun 2004), the Thirty-Day Functioning, the Service Use Battery, and sociodemographic variables.
The NCS-R and NLAAS were designed to include parallel assessments across most demographic characteristics and all clinical measures.
born Latino group consisted of all participants born in the United States included in the NLAAS dataset (n = 924) while the foreign-born Latino group consisted of all participants born outside the U.
Diagnostic categories assessed in both NLAAS and NCS-R studies and used in this report included 5 anxiety disorders (Social Phobia, Generalized Anxiety Disorder, Post-Traumatic Stress Disorder, Panic Disorder, and Agoraphobia), 2 depressive disorders (Major Depressive Disorder and Dysthymia), 4 substance use disorders (Alcohol Abuse, Alcohol Dependence, Drug Abuse, and Drug Dependence) and 2 eating disorders (Bulimia Nervosa and Anorexia Nervosa).
In the combined NCS-R and NLAAS samples, those who reported onset of the assessed anxiety disorders before the age of 18 were categorized as having childhood onset, while those reported onset at age 18 or older were categorized as having adult onset.
Across the pooled NCS-R and NLAAS samples, a total of 1,939 individuals reported one or more anxiety disorders.
Exclusion of incarcerated and homeless individuals may have resulted in an under-representation of seriously emotionally disturbed individuals in the NCS-R and NLAAS datasets (Kessler et al.