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Metadata Correction of: How Best to Obtain Valid, Verifiable Data Online From Male Couples? Lessons Learned From an eHealth HIV Prevention Intervention for HIV-Negative Male Couples

Metadata Correction of: How Best to Obtain Valid, Verifiable Data Online From Male Couples? Lessons Learned From an eHealth HIV Prevention Intervention for HIV-Negative Male Couples

The academic affiliation of author Jason Mitchell was incorrect in the paper entitled “How Best to Obtain Valid, Verifiable Data Online From Male Couples?

Jason Mitchell, Ji-Young Lee, Rob Stephenson

JMIR Public Health Surveill 2016;2(2):e155


Computerized Adaptive Testing Provides Reliable and Efficient Depression Measurement Using the CES-D Scale

Computerized Adaptive Testing Provides Reliable and Efficient Depression Measurement Using the CES-D Scale

Hence, the CES-D scale is most precise in estimating the underlying trait when the theta level is approximately zero (average). Parameter estimates and factor loadings for the 17 items of the CES-D Scale. The test information of the CES-D scale.

Bao Sheng Loe, David Stillwell, Chris Gibbons

J Med Internet Res 2017;19(9):e302


Twitter Strategies for Web-Based Surveying: Descriptive Analysis From the International Concussion Study

Twitter Strategies for Web-Based Surveying: Descriptive Analysis From the International Concussion Study

Cohen’s d effect sizes were calculated to determine the magnitude of the difference between the two strategies.

Sharief Hendricks, Peter Düking, Stephen D Mellalieu

JMIR Res Protoc 2016;5(3):e179