Using SDA Services @ ICPSR Part II ACCOLEDS / DLI Training 2003 December 8 – 10 University of Calgary Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Accoleds/DLI Training 2003 University of Calgary Contents Roadmap Overview of SDA Features Online Tools: Using the ICPSR Data Analysis System (DAS) SAMHDA’s TEDS QuickTables SDA: Mucking about with Data Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Accoleds/DLI Training 2003 University of Calgary Overview of SDA SDA (Survey Documentation & Analysis) Developed at UC, Berkeley Web software to perform simple data analysis Tool for Teaching & Classroom use No need for stats packages on local computers Browse codebooks No need to download data & docs Create summary statistics for reports Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Accoleds/DLI Training 2003 University of Calgary SDA Features browse codebooks, questionnaires, documentation statistical procedures: eg. list values, frequencies, crosstabs, … manipulate variables eg. Recode, compute new variables, … custom subsets of selected variables and cases codebook open in a separate window download all : data, SPSS/SAS def, docs Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Online Analysis Using the Data Analysis System (DAS) 150 studies available in SDA format DAS studies related to: Aging Criminal Justice Education Substance Abuse & Mental Health Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Online Analysis Using the Data Analysis System (DAS) Special Topic Archives With their Web Sites: Census 2000 at ICPSR Election 2000 at ICPSR General Social Survey (GSSDIRS) Health and Medical Care Archive (HMCA) Homicide Research Working Group (HRWG) International Archive of Education Data (IAED) National Archive of Computerized Data on Aging (NACDA) National Archive of Criminal Justice Data (NACJD) Site for Instructional Materials and Information (SIMI) Substance Abuse & Mental Health Data Archive (SAMHDA) Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Quick Tables ( source www.DrugAbuseStatistics.samhsa.gov ) Substance Abuse & Mental Health Data Archive (SAMHDA) has new feature: QuickTables Produces analytic tables via drop down –menus Available for all Treatment Episode Data Sets (TEDS) Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Quick Tables … ( source www.DrugAbuseStatistics.samhsa.gov ) six easy steps to use Quick Tables start: http://www.icpsr.umich.edu/SAMHDA Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Quick Tables ….. ( source www.DrugAbuseStatistics.samhsa.gov ) Step 1: Select “Online Analysis” from the SAMHDA front page (http://www.icpsr.umich.edu/SAMHDA) Step 2: Select the Treatment Episode Data Set. Step 3: In the Quick Tables section, select the TEDS 1992-2000 concatenated file. This produces a list of the available Quick Tables for the selected file (see Figure 1) Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Quick Tables ….. ( source www.DrugAbuseStatistics.samhsa.gov ) Step 4: Select desired Quick Table. For the example, select “Client Characteristics by Year”. Step 5: Left-click on the drop-down menus to select variables for the table(2). Custom Quick Tables may be generated for 11different client characteristics(3) for an individual State or for all States combined. For the example, select “Employment Status” as the client characteristic and limit the table to Maryland. The completed input screen is shown in Figure 2. 2. The year variable is hard-coded for selected TEDS Quick Tables, including the one used for the example. 3. These 11 client characteristics include gender, age group, race, ethnicity, education level, employment status, marital status, pregnancy status, veteran status, living arrangement, and primary source of income Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Accoleds/DLI Training 2003 University of Calgary Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Quick Tables ….. ( source www.DrugAbuseStatistics.samhsa.gov ) …Explanation of Results is found on the final page (cases, desc vriables, publications, citations etc) …… (flip) Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA Online Tutorial: http://sda.berkeley.edu:7502/man3h/uindex.html The Web-based SDA programs are intended to be self-explanatory, and there is online help available within each program. But you can also access the help files at the Online Tutorial page. Quick Exercise ….. Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA 1 Quick Exercise ….. Example : using SAMHDA data examine association between marijuana use and cigarette smoking. www.icpsr.umich.edu/SAMHDA Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA 2 Select data file…. National Household Survey on Drug Abuse Then select most recent study ( 2001)… Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA 3 Consult Codebook…. May be opened in a separate window Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA 4 Look for variables…. “Have you ever smoked a cigarette” “Have you ever, even once, used marijuana or hashish” Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA 5 Finding out about variables…. Double click on variable name to learn additional information … Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA 6 Analyse variables…. Perform crosstabulation of variables to determine if “Cigarette smoking contributes to a higher probablity of marijuana use” …. (Click Start)

Hands on: Mucking about with Data via SDA 7 Enter variables…. Fill in the variable name in the ROW and COLUMN fields. Recode variables (R: 1=1,3 "yes”; 2 = 2,4 "no") then RUN Table (NHSDA Uses “logically assigned” valus for cases where respondents have not responded but answer can be infered. Explained in codebook.

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Hands on: Mucking about with Data via SDA “play it again sam”: Using the GSS survey at ICPSR http://www.icpsr.umich.edu:8080/GSS/homepage.htm GSS 1972-2002 Cumulative Datafile Examine if there are any differences in the "feelings of God" amoung Married people and those who have Never Married? Use GSS 1972-2002 Cumulative datafile choose NEARGOD & MARITAL variables Filter out other categories (2,3,4) Using SDA part ii Accoleds/DLI Training 2003 University of Calgary

Hands on: Mucking about with Data via SDA “play it again sam”:

Hands on: Mucking about with Data via SDA