There may also be technical reasons, such as adjusting calculations for foods with very high water content.
We have also presented PoolingPlanner, a simple program to help translate these variances into their effect on sample size, information that can then be use in a power calculator to conduct pool-adjust calculations.
Pew and the DHS both try to account for deaths, under-counted groups, arrivals and departures, and have adjusted their calculations based on decades' worth of research.
They adjusted these calculations for 32 variables, including "whether a child was new to the city in pretest or post-test year" and "whether the child was retained in grade before pretest year".
Every other county in the state adjusted GPA calculations to allow for the added difficulty of honors classes, but according to Brand, who is also a math teacher, the city did not, creating a situation where, as he told the Baltimore Sun at the time: "Butler's 1.51 in the city would have been a 2.125 in the county," a GPA which would have allowed him to take the scholarship.
The cluster centroids are adjusted and calculations reiterated until no further significant improvement in intra-cluster inertia is achieved.
To control for potential confounding effects, we adjusted all calculations of ORs for skin lesions for level of education, smoking status, use of betel nut, use of chewing tobacco, BMI, and previous well use.
Model 5 adjusted IRR calculations for all 8 of the factors identified, including those for the USRDS standard model (Model 1: age, sex, race, and dialysis vintage) plus ESRDS network, length of facility ownership, vascular access at first dialysis session, and pre-dialysis nephrology care.
Note: * P-value is crude without risk adjustment # OR: Odds Ratio 95%CI: 95% Confidence Interval Age, gender, education, marital status, income, language, birthplace, and number of chronic conditions were adjusted for calculation of adjusted odds ratio We restricted our analyses to Chinese only in order to assess factors associated with their reported satisfaction and compliance (see Table 4).
