I need help logging into MyData Account and changing my email address or password.

Logging into Your MyData Account

The only time the SAMHDA website requires users to log in using a MyData account is for access to the R-DAS (?). When prompted to log in to the R-DAS on the Log into SAMHDA page, select the "Login via MyData" option to log in using your MyData account.

Changing Your Email Address

Once you've logged in to the R-DAS, the upper right corner of the SAMHDA website will display a link with your name and a logout option. Clicking on your name will take you to the "Edit Settings" page. Select the "Change your password" link to change your password.

Recovering/Resetting Your Password

To recover your MyData password, select the "Request your password to be sent to you via email" link on the "Log into SAMHDA" page and follow the instructions on the next page. After you receive the email, we recommend that you change the password.

Locked Out?

For assistance with MyData, please contact ICPSR User Support at netmail@icpsr.umich.edu.

What is MyData?

MyData is one login option for access to the R-DAS. It is a user registration and authentication system for archives within ICPSR, like SAMHDA. The system creates a more secure environment for users and enables them to sign up for ICPSR services. MyData has the following user-friendly features:

• Uses an email address as a login ID
• Requires a password to authenticate to the website
• Allows users to create an account and set preferences
• Allows registered users to reset a forgotten password

Do I have to establish a MyData account?

Users who wish to analyze restricted-use data available in the R-DAS may either establish a MyData account or log in using their Facebook, Google, or LinkedIn account. When a user creates a new MyData account, s/he will be asked to complete a brief questionnaire about user preferences.

How do I produce correct estimates for NSDUH: 4- and 2-Year R-DAS data files?

To generate correct estimates for the NSDUH: 4- and 2-Year R-DAS data files, users must use the year pair indicator variable (YRPRIND) in one of the following ways:

1. As a filter to subset the data file for a specific group of years such as:
   - For the 2-Year R-DAS data file use "YRPRIND(1)" for 2002-2003, "YRPRIND(2)" for 2004-2005, "YRPRIND(3)" for 2006-2007, "YRPRIND(4)" for 2008-2009, "YRPRIND(8)" for 2010-2011 or "YRPRIND(10)" for 2012-2013 in the filter field.
   - For the 4-Year R-DAS data file use "YRPRIND(5)" for 2002-2005 or "YRPRIND(6)" for 2006-2009 in the filter field.
2. As a control variable. PLEASE NOTE: This option will produce separate results for each combined group of years (e.g., 2002-2005). The last table with total estimates is invalid and should be ignored.
3. As a row variable in the row field. PLEASE NOTE: Under this option the column total estimates are invalid and should be ignored.
4. As a column in the column field. PLEASE NOTE: Under this option the row total estimates are invalid and should be ignored.

The NSDUH R-DAS data files do not allow for the creation of single-year estimates because of the potential for disclosure of confidential information. The NSDUH R-DAS data files contain revised weights designed to produce estimates that are representative of the average population across combined two-year (2002-2003, 2004-2005, 2006-2007, 2008-2009, 2010-2011, and 2012-2013), four-year (2002-2005 and 2006-2009), eight-year (2002-2009), or ten-year (2002-2011) periods. There are no weights on the 4-year R-DAS that are representative of all eight years; thus all estimates of totals across the period 2002-2009 will be twice as large as they should be. Similarly, there are no weights on the 2-year R-DAS that are representative of all twelve years. To get the correct estimates of totals across the eight year period, the 8-year R-DAS file should be used. Similarly, the 10-year R-DAS file should be used to get the correct estimates of totals across the ten year period.