Potential Military Applications of Two-Phase Sampling

1982 ◽  
Vol 14 (4) ◽  
pp. 296-299
Author(s):  
Patrick d. Allen ◽  
Stephen m. Rasey
Keyword(s):  
Two Phase ◽  
Military Applications ◽  
Phase Sampling ◽  
Two Phase Sampling

scholarly journals A combination sampling approach for epidemiologic research in humanitarian settings: a case analysis of a study of depressive disorder prevalence among refugees in Greece

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Danielle N. Poole ◽  
Nathaniel A. Raymond ◽  
Jos Berens ◽  
Mark Latonero ◽  
Julie Ricard ◽  
...  
Keyword(s):  
Depressive Disorder ◽  
Case Analysis ◽  
Refugee Camp ◽  
Second Phase ◽  
Two Phase ◽  
Humanitarian Emergencies ◽  
Prevention And Treatment ◽  
Phase Sampling ◽  
Two Phase Sampling ◽  
Sampling Approach

Abstract Background Understanding the burden of common mental health disorders, such as depressive disorder, is the first step in strengthening prevention and treatment in humanitarian emergencies. However, simple random sampling methods may lead to a high risk of coercion in settings characterized by a lack of distinction between researchers and aid organizations, mistrust, privacy concerns, and the overarching power differential between researchers and populations affected by crises. This case analysis describes a sampling approach developed for a survey study of depressive disorder in a Syrian refugee camp in Greece (n = 135). Discussion Syrian refugees face an extraordinarily high burden of depressive disorder during the asylum process (43%), necessitating population screening, prevention, and treatment. In order to preserve the informed consent process in this refugee camp setting, the research team developed a two-phase sampling strategy using a map depicting the geographical layout of the housing units within the camp. In the first phase, camp management announced a research study was being undertaken and individuals were invited to volunteer to participate. The participants’ container (housing) numbers were recorded on the map, but were not linked to the survey data. Then, in the second phase, the camp map was used for complementary sampling to reach a sample sufficient for statistical analysis. As a result of the two phases of the sampling exercise, all eligible adults from half the containers in each block were recruited, producing a systematic, age- and sex-representative sample. Conclusions Combining sampling procedures in humanitarian emergencies can reduce the risk of coerced consent and bias by allowing participants to approach researchers in the first phase, with a second phase of sampling conducted to recruit a systematic sample. This case analysis illuminates the feasibility of a two-phase sampling approach for drawing a quasi-random, representative sample in a refugee camp setting.

scholarly journals Response-dependent two-phase sampling designs for biomarker studies

2014 ◽  
Vol 42 (2) ◽  
pp. 268-284 ◽  
Author(s):  
Michael A. McIsaac ◽  
Richard J. Cook
Keyword(s):  
Two Phase ◽  
Phase Sampling ◽  
Two Phase Sampling

Sample size allocation in two-phase sampling

1974 ◽  
Vol 3 (11) ◽  
pp. 1025-1040
Author(s):  
J. Sedransk ◽  
Bahadur Singh
Keyword(s):  
Sample Size ◽  
Two Phase ◽  
Sample Size Allocation ◽  
Phase Sampling ◽  
Two Phase Sampling

A two‐phase sampling scheme with applications to auditing or sed quis custodiet ipsos custodes ?

2001 ◽  
Vol 164 (2) ◽  
pp. 407-422 ◽  
Author(s):  
V. Barnett ◽  
J. Haworth ◽  
T. M. F. Smith
Keyword(s):  
Sampling Scheme ◽  
Two Phase ◽  
Phase Sampling ◽  
Two Phase Sampling

On ratio estimators in two phase sampling under size stratification and estimation over two successive occasions

1981 ◽  
Vol 12 (3) ◽  
pp. 409-417
Author(s):  
Pradesh Kumar ◽  
V.K. Gupta
Keyword(s):  
Two Phase ◽  
Phase Sampling ◽  
Ratio Estimators ◽  
Two Phase Sampling
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