Sentences with phrase «bias adjustment studies»

Not exact matches

Crude ORs were calculated in the program, thus avoiding biases that may have arisen from adjustments to different confounders done in each study.

To correct for limitations, Bauchner et al suggested four standards for breast feeding studies.22 These include avoidance of detection bias, clear definition of the outcome event, clear definition of breast feeding, and adjustment for potential confounding variables.

We carefully studied issues raised by skeptics: biases from urban heating (we duplicated our results using rural data alone), from data selection (prior groups selected fewer than 20 percent of the available temperature stations; we used virtually 100 percent), from poor station quality (we separately analyzed good stations and poor ones) and from human intervention and data adjustment (our work is completely automated and hands - off).

We carefully studied issues raised by skeptics: biases from urban heating (we duplicated our results using rural data alone), from data selection (prior groups selected fewer than 20 percent of the available temperature stations; we used virtually 100 percent), from poor station quality (we separately analyzed good stations and poor ones) and from human intervention and data adjustment (our work is completely automated and hands - off).

Before making adjustments to the data, in any scientific study, it is necessary to have solid evidence of a bias, not just hypothesis and speculative reasoning.

While the various studies have identified possible sources of bias, the lack of documentary evidence for the changes and the degree of speculation concerning the geographical extent, duration and timing of the changes makes the adjustments no less ad hoc than the simple adjustment.

Berkeley Earth also has carefully studied issues raised by skeptics, such as possible biases from urban heating, data selection, poor station quality, and data adjustment.

NOAA released only what was nonresponsive to the inquiry into what role motivated reasoning and political bias may have played in the adjustments, questions that are totally reasonable given graphs like this and this even before the Watts study.

Concerns that may be relevant for this study included a possible bias in reporting or interpretation of somatic symptoms and limited sensitivity to detecting mild adjustment problems.

Some researchers have argued that associations between abuse and adjustment problems can be explained by reporting biases because many studies of the effects of physical maltreatment use samples for which maltreatment is identified by referral to social service agencies.6 Of the community - wide population of maltreated children, those who are referred may represent a biased, more problematic subgroup.