To improve comparability across studies, investigators need to provide sufficient detail on the population sampled, the collection methodology, pesticides of interest, selection of sampling locations, chemical extraction, and analytical methods, as well as the statistical measures used to address values below the analytical detection limits.
The interviewers who conducted his surveys had to fill a quota so that the population sampled would constitute an exactly proportionate mini-electorate.
The numbers of lice, along with experimentally estimated mortality rates from lice infection, allowed Volpe's group to estimate mortality for the population sampled.
These findings should be understood in the context that the population sampled were those attending preparation for parenthood classes, and thus different interventions will be needed for couples who do not attend such classes.
The population sampled was typical of wild pig populations in tropical areas of Australia, and sampling occurred approximately halfway through the population's breeding season (38% of the 229 adult females were pregnant and 35% were lactating).
That is, the WTP of US$2233 reported by Martínez-Cruz and Sainz-Santamaría (2015) can be interpreted as an upper bound of the WTP for cleaner air among the population sampled in their study which is composed by people mostly visiting from the MCMA.
Within any particular trial, the required sample size will depend crucially on the characteristics of the population sampled, the type (and perhaps number) of endpoints, losses to follow-up and other deviations from protocol, as well as important statistical considerations, especially the type of design, including Type I and II error rates, and methods of analysis.
We set the proportion of the population sampled to the average annual recapture probability [0.90±0.02, 25].
We used the same values for proportion of the population sampled and genotyping error as in the parentage analysis.
In C. sphinx, significant genetic differentiation was detected (global exact test, P<0.05) with pairwise values indicating that this is caused by the population sampled at Mandiyoor which was consistently differentiated from all other colonies sampled in China and Vietnam (P<0.05).
The Q10 estimate of 13 found in the present study is not reliable because the initial gut content of the field population sampled for the experiment at elevated temperature was 113% greater than in the population sampled for the experiment at control temperature.
