This article uses previously under-exploited quantitative and qualitative primary sources in Hong Kong, the US, and the UK to chronicle how radio broadcast technologies extended in a Less Developed Country. As incomes were rising and the price of radio receiving sets was falling, demand-side...

At the UK Stata User's Group meeting in 2000, we presented a series of linked commands which made it possible to declare exposure, stratifying and confounding variables, and to combine this information with Stata estimation commands such as regress, logistic, poisson, stcox, xtpois, etc., to...

Stata incorporates commands for carrying out two of the three general approaches to asymptotic significance testing in regression models, namely likelihood ratio (lrtest) and Wald tests (testparms). However, the third approach, using "score" tests, has no such general implementation. This...