Further, the distribution of grain weight loss data for the hybrids was continuous and almost normal at the four intervals of data collection, clearly supporting that resistance was partial and possibly conditioned by minor genes with cumulative effects.
The median intervals of data collection for these treatment groups were 9 days (3 38), 30 days (15 74), and 28 days (14 54), respectively.
The median interval of data collection between pre-treatment and post-treatment measurements was 28 days (interquartile range: 14 52 days).
Potential reasons for differences in risk factors between the models include the size of the dataset available for model development, the availability of each risk factor, differences in the time interval of data collection, difference in the populations studied between development datasets and differences in risk factor definitions.
In addition, the time interval of data collection is 15 ms.
The interval nature of data collection implied that covariates could only be updated to their most recent value, six months before treatment decisions, but not immediately before.
The participants were contacted by trained medical students at regular intervals to verify the completeness and accuracy of data collection.
ELSA does not contain information on the date of diagnosis nor the date of treatment; with 2-year intervals between waves of data collection, an analysis of waiting times using ELSA is rather imprecise, although an analysis of this kind would be a valuable next step.
We calculated the annual odds of these conditions and their 95% confidence intervals adjusted for time of data collection.
Every attempt will be made to reduce to an absolute minimum the interval between the completion of data collection and the release of the study results.
All studies except J-STAR are based on representative national samples of individuals aged 50 and older with ongoing waves of data collection in two-year intervals covering a variety of sociological, economic and health-related topics.
