TY values were calculated by subtracting all 150 item scores on the MSPI-R for each member of the stratified random sample
from all 150 item scores on the MSPI-R for each individual in the reference group, with the resulting differences being squared.
Data Source: The data are from a stratified random sample
of more than 5,000 hemodialysis patients in the United States who were treated at about 140 dialysis facilities between August 2010 and April 2012, corroborated by Medicare claims data.
MORTECH 2010, based on a stratified random sample
of mortgage lenders, found that:
On the other hand, the McREL data is not a stratified random sample
of the US teacher population (the way the PBS data is).
Of the 121 students participating in the study, Certo interviewed a stratified random sample
of 24, after they participated in such small-group literature discussions for four months.
6) These estimates differ from Savage and Hodges (2006) because their analysis was based on a stratified random sample
METHODS: A stratified random sample
of 467 residents of East Boston, Massachusetts, 65 years of age or older, were given structured neurologic examinations.
Using the 2006 Canadian Census, a stratified random sample
of 6,421 women over age 14 with singleton live births in the previous three months were identified and interviewed about socio-economic and demographic information; reproductive history; folic acid use; prenatal care; smoking, alcohol and street drug use; stress and support; physical and sexual abuse; information received about pregnancy, birth and post-partum issues; interventions during pregnancy, labour and delivery; post-partum health and care; postpartum depression; and infant feeding.
The CHI survey was mailed to a stratified random sample
of 3,000 RNs licensed to practice in Colorado as of October 2008.
Creating a stratified random sample
begins by dividing the population into subgroups (known as strata) based on one or more essential characteristics.
Between 1998 and 2000 McKenzie Leiper re-interviewed the 60 women from the first two samples and interviewed an additional sample of 50 women recruited from a stratified random sample
drawn from the Law Society lists and included "women of all ages and practice types, representing a broad range of racial and ethnic backgrounds" (p.
We surveyed a stratified random sample
of 595 publicly held companies and, after removing ineligible companies from the sample and population, obtained 406 usable responses and a weighted response rate of 73 percent.