Principal stratification and attribution prohibition: good ideas taken too far.

Principal Score Methods : Assumptions and Extensions ∗

Researchers addressing post-treatment complications in randomized trials often turn to principal stratification to define relevant assumptions and quantities of interest. One approach for estimating causal effects in this framework is to use methods based on the “principal score,” typically assuming that stratum membership is as-good-as-randomly assigned given a set of covariates. In this paper...

The dichotomy of prohibition and acceptance of music in the Ghaznavid period

Abstract One of the important cultural issues after the domination of Islam is the attitude to music. In the analyses carried out by Islamic scholars, the use of music was distinguished into two permitted and non-permitted flows. As a result of the use of illegal music, two discourses of sanctions and acceptance were formed, which were qualitatively and quantitatively different. In the Ghaznavi...

“Equivalent Linear Composition” as an Efficient Stratification Factor in Multipurpose Surveys

Horticulture survey is a multi-purpose survey which is conducted ad hoc by Statistical Center of Iran (SCI). Availability of survey variables in the sampling frame suggests a multivariate stratification in each province based on its desired variables for acquiring a higher efficiency. There are several ways to stratify the sampling frame considering all stratification variables, such as using s...

Doubling our precision of risk stratification in early prostate cancer: too good to be true?

An Application of Principal Stratification to Control for Institutionalization at Follow-up in Studies of Substance Abuse Treatment Programs.

Participants in longitudinal studies on the effects of drug treatment and criminal justice system interventions are at high risk for institutionalization (e.g., spending time in an environment where their freedom to use drugs, commit crimes, or engage in risky behavior may be circumscribed). Methods used for estimating treatment effects in the presence of institutionalization during follow-up c...