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Chapter 19 Methods Appendix. GAIN Coordinating Center (11/21/2012). Normal , IL: Chestnut Health Systems. November 2012 . Available from www.gaincc.org/slides.

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Chapter 19 Methods Appendix

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Chapter 19 methods appendix

Chapter 19Methods Appendix

GAIN Coordinating Center (11/21/2012).

Normal, IL: Chestnut Health Systems. November 2012.

Available from www.gaincc.org/slides

Created for: Substance Abuse and Mental Health Services Administration’s (SAMHSA) Center for Substance Abuse Treatment (CSAT) under contract number 270-2012-00001


Methods appendix

Methods Appendix

  • This section provides an overview of methodological issues including:

    • Administration times

    • Follow-up rates,

    • Months to last follow-ups,

    • Number of follow-ups,

    • Instrument fidelity.


Administration times

Administration Times

  • ‘Core Only’ administration refers to records where the participant was asked only the required GAIN items and none of the optional items.

  • ‘Core + Optional’ (Full) administration refers to records where the participant was asked all required and optional GAIN items. This version includes recommended and treatment items for a broader clinical picture.

  • ‘Total’ indicates the combination of both the records that used a core with the records that used the full.

  • Approximately 8% of cases could not be designated as a Full or a Core only administration.

  • Less than 1% were missing data on interview duration.


Administration times1

Administration Times

SAMHSA 2011 GAIN Summary Analytic Data Set (n = 29,715)


Valid n for core and optional items

Valid N for Core and Optional Items

  • The number of cases available for analysis will vary depending upon whether the item of interest is a an optional or required (Core) item.

  • The following slides show the number and breakout characteristics of cases available when the item of interest is Optional or Core.

    • Optional items: Only those that opted to fill out a full version of the GAIN will have valid answers to optional items, so optional items will have a lower number of valid responses.

    • Required/Core items: Every record should have a valid answer for a required item, so core items will include all records in the SAMHSA/CSAT Data Set.


Valid n for core and optional items 1

Valid N for Core and Optional Items – 1

SAMHSA 2011 GAIN Summary Analytic Data Set (n = 29,782)


Valid n for core and optional items 2

Valid N for Core and Optional Items - 2

SAMHSA 2011 GAIN Summary Analytic Data Set (n = 29,782)


Valid n for core and optional items 3

Valid N for Core and Optional Items - 3

SAMHSA 2011 GAIN Summary Analytic Data Set (n = 29,782)


Valid n for core and optional items 4

Valid N for Core and Optional Items - 4

SAMHSA 2011 GAIN Summary Analytic Data Set (n = 29,782)


Valid n for core and optional items 5

Valid N for Core and Optional Items - 5

SAMHSA 2011 GAIN Summary Analytic Data Set (n = 29,782)


Valid n for core and optional items 6

Valid N for Core and Optional Items - 6

SAMHSA 2011 GAIN Summary Analytic Data Set (n = 29,590)


Follow up rates

Follow Up Rates*

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by age

Follow Up Rates* by Age

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by gender

Follow Up Rates* by Gender

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by race

Follow Up Rates* by Race

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by substance use severity

Follow Up Rates* by Substance Use Severity

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by risk of homelessness

Follow Up Rates* by Risk of Homelessness

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by severity of victimization

Follow Up Rates* by Severity of Victimization

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by mental health disorders

Follow Up Rates* by Mental Health Disorders

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by health problems

Follow Up Rates* by Health Problems

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by crime and violence

Follow Up Rates* by Crime and Violence

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by intensity of justice system involvement

Follow Up Rates* by Intensity of Justice System Involvement

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by program

Follow Up Rates* by Program

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by level of care

Follow Up Rates* by Level of Care

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow up rates by type of treatment

Follow Up Rates* by Type of Treatment

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by gender

Average Number of Follow Ups & Months to Last Wave by Gender

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by age

Average Number of Follow Ups & Months to Last Wave by Age

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by race

Average Number of Follow Ups & Months to Last Wave by Race

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by substance use severity

Average Number of Follow Ups & Months to Last Wave by Substance Use Severity

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by risk of homelessness

Average Number of Follow Ups & Months to Last Wave by Risk of Homelessness

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by severity of victimization

Average Number of Follow Ups & Months to Last Wave by Severity of Victimization

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by mental health disorders

Average Number of Follow Ups & Months to Last Wave by Mental Health Disorders

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by health problems

Average Number of Follow Ups & Months to Last Wave by Health Problems

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by crime and violence

Average Number of Follow Ups & Months to Last Wave by Crime and Violence

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by intensity of justice involvement

Average Number of Follow Ups & Months to Last Wave by Intensity of Justice Involvement

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by program

Average Number of Follow Ups & Months to Last Wave by Program

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by level of care

Average Number of Follow Ups & Months to Last Wave by Level Of Care

SAMHSA 2011 GAIN Summary Analytic Data Set


Average number of follow ups months to last wave by type of treatment

Average Number of Follow Ups & Months to Last Wave by Type of Treatment

SAMHSA 2011 GAIN Summary Analytic Data Set


Gain administration fidelity index gafi

GAIN Administration Fidelity Index (GAFI)

*Proportional sum of 7 items

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,482)


Gafi by gender

GAFI by Gender

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,475)


Gafi by age

GAFI by Age

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,482)


Gafi by race

GAFI by Race

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,468)

42


Gafi by substance use severity

GAFI by Substance Use Severity

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,207)


Gafi by risk of homelessness

GAFI by Risk of Homelessness

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,362)


Gafi by severity of victimization

GAFI by Severity of Victimization

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,454)


Gafi by mental health disorders

GAFI by Mental Health Disorders

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,451)


Gafi by health problems

GAFI by Health Problems

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,289)


Gafi by crime and violence

GAFI by Crime and Violence

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,460)


Gafi by intensity of justice system involvement

GAFI by Intensity of Justice System Involvement

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,404)


Gafi by program

GAFI by Program

SAMHSA 2011 GAIN Summary Analytic Data Set (n=19,482)


Gafi by level of care

GAFI by Level of Care

SAMHSA 2011 GAIN Summary Analytic Data Set (n=18,684)


Gafi by type of treatment

GAFI by Type of Treatment

SAMHSA 2011 GAIN Summary Analytic Data Set (n=18,907)


Summary of psychometrics

Summary of Psychometrics

  • Normative psychometric data and basic demographic information for GAIN scales and data sets (mean, N, standard deviation, Cronbach's alpha and intraclass correlations are available at http://www.gaincc.org/_data/files/Psychometrics_and_Publications/Resources/GAIN-I_Norms.xls

    • This file is broken up into separate worksheets for all records, Adolescents (age 12-17), Young Adults (age 18-25), and Adults (age 18 and higher).

    • Within each age category, demographics are presented first, followed by overall norms and ICC including across follow-up waves, then intake norms by each of the three main demographic categories of gender, race and age.


Accessing gain data

Accessing GAIN Data

  • Access to the de-identified pooled SAMHSA/CSAT data set is available through request.

  • For more information regarding how to request data and what you will need please visit http://gaincc.org/analysis

  • Summary of what is needed:

    • Data Sharing Agreement (see DSA Decision Tree at http://www.gaincc.org/_data/files/Psychometrics_and_Publications/Analysis_Publication/DSA_Decision_Tree.pdf)

    • A 1 - 3 page abstract (see Access training memo at http://www.gaincc.org/_data/files/Psychometrics_and_Publications/Analysis_Publication/Access.pdf)

  • For help please contact [email protected]


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