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Social and Behavioral Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

2013

Social Psychology and Interaction

Iowa State University

Articles 1 - 2 of 2

Full-Text Articles in Social and Behavioral Sciences

Factors Related To Depression Among Latina Immigrant Mothers, Dawn Browder, Kimberly A. Greder, Sedahlia Jasper Oct 2013

Factors Related To Depression Among Latina Immigrant Mothers, Dawn Browder, Kimberly A. Greder, Sedahlia Jasper

Human Development and Family Studies Publications

Latinos account for 16.3 percent (50.5 million) of the total U.S. population, for more than half of the total growth of the U.S. population in the last decade (Humes, Jones, and Ramirez, 2011), and halting, and in some cases reversing, the gradual population decline in pockets of rural America (Kandel and Cromatie, 2004). However, as the Latino population has grown, so has the prevalence of poverty (21.5% in 2000; 26.6% in 2010) (DeNavas-Walt C, Proctor BD, and Smith, 2011) and food insecurity (21.8% in 2000; 26.2% in 2010) (Nord, Andrews and Carlson ...


The Role Of Random Allocation In Randomized Controlled Trials: Distinguishing Selection Bias From Baseline Imbalance, Allyn Fives, Daniel W. Rusell, Noreen Kearns, Rena Lyons, Patricia Eaton, John Canavan, Carmel Devaney, Aoife O'Brien Feb 2013

The Role Of Random Allocation In Randomized Controlled Trials: Distinguishing Selection Bias From Baseline Imbalance, Allyn Fives, Daniel W. Rusell, Noreen Kearns, Rena Lyons, Patricia Eaton, John Canavan, Carmel Devaney, Aoife O'Brien

Human Development and Family Studies Publications

Background: This paper addresses one threat to the internal validity of a randomized controlled trial (RCT), selection bias. Many authors argue that random allocation is used to ensure baseline equality between study conditions in a given study and that statistically significant differences at pretest mean that randomisation has failed.

Purpose: The purpose of this study was to clarify the role of random allocation in an RCT study. Is the role of random allocation to protect against selection bias? And does it have a further role, namely to ensure baseline equality and the absence of statistically significant differences between study conditions ...