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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 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

  • 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

  • ‘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 Times

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


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

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


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

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


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

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


Valid N for Core and Optional Items - 6

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


Follow Up Rates*

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow Up Rates* by Age

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


Follow Up Rates* by Gender

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


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

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


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

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


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

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


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

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


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

*Of those due for that follow-up

SAMHSA 2011 GAIN Summary Analytic Data Set


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

SAMHSA 2011 GAIN Summary Analytic Data Set


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

SAMHSA 2011 GAIN Summary Analytic Data Set


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

SAMHSA 2011 GAIN Summary Analytic Data Set


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

SAMHSA 2011 GAIN Summary Analytic Data Set


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

SAMHSA 2011 GAIN Summary Analytic Data Set


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

SAMHSA 2011 GAIN Summary Analytic Data Set


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

SAMHSA 2011 GAIN Summary Analytic Data Set


GAIN Administration Fidelity Index (GAFI)

*Proportional sum of 7 items

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


GAFI by Gender

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


GAFI by Age

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


GAFI by Race

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

42


GAFI by Substance Use Severity

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


GAFI by Risk of Homelessness

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


GAFI by Severity of Victimization

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


GAFI by Mental Health Disorders

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


GAFI by Health Problems

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


GAFI by Crime and Violence

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


GAFI by Intensity of Justice System Involvement

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


GAFI by Program

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


GAFI by Level of Care

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


GAFI by Type of Treatment

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


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

  • 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 GAINEval@Chestnut.org


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