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Missing data are common in observational studies, and in the present study there were varying degrees of missing observations for some variables, some as high as 50%.
Given the small number of observations for some groups, several of these coefficients are not measured precisely.
21The number of observations does not exactly coincide with the transitions shown in Table 6 because of some missing observations for some explanatory variables.
Estimated column heights (in km) are determined either from direct observations for some historical eruptions, or by using the maximum clast size dispersal method of Carey and Sparks (1986).
Outside this period we had very few observations for some days (<8 observations for each day).
Nevertheless, our study identifying PB integrity as a novel target of bacterial infection, following similar observations for some viruses, highlights the physiological importance of PB disruption by pathogens.
Similar(49)
Each observation is an OOB observation for some of the trees.
Ethnicity was significantly associated with unmet dental care needs over a three-point-five-year period of observation for some, but not all groups.
Rumours that an abortionist was operating at the tenement had reportedly led to the property being placed under police observation for some time prior to Christie's arrest, but investigations had apparently drawn a blank.
I was very much impressed by the fact that it is an extremely difficult matter to keep the records of patients who are under observation for some time in a manner so that an intelligent and comprehensive résumé of the patient's progress from the time he enters the hospital until he is dismissed cured, improved, unimproved, or still under observation, can be made.
Generally, it is very difficult to derive optimal or at least efficient designs for linear models with correlated observations, and for some correlation structure, an exact D-optimal design does not exist.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com