The phrase "adjustment frequency and" is correct and usable in written English.
It can be used in contexts related to settings or parameters that require adjustment, particularly in technical or scientific discussions.
Example: "The device operates optimally at an adjustment frequency and should be calibrated accordingly."
Alternatives: "tuning frequency and" or "modification frequency and".
The predictors evaluated were facility-level Hb measurement and ESA dose adjustment frequencies, and the outcome measured was facility-level Hb variation.
We summarized the aggregate variation in facility-level Hb variation, Hb measurement frequency, and ESA dose adjustment frequency by pooling these measurements across all facility-month combinations and calculating basic descriptive statistics.
We considered 2 separate models for studying the associations between facility-level Hb variation and Hb measurement frequency and between facility-level Hb variation and ESA dose adjustment frequency due to the relatively high collinearity between Hb measurement and ESA dose adjustment frequencies.
We studied associations between facility-level Hb variation and Hb measurement frequency and between facility-level Hb variation and ESA dose adjustment frequency by using a mixed-modeling regression approach that partitioned cross-sectional and longitudinal information in the data [ 24- 26].
Figure 2 summarizes the longitudinal variation in the mean values of facility-level Hb variation, Hb measurement frequency, and ESA dose adjustment frequency.
A study time period of July 2006 to June 2009 was chosen because it coincided with a significant longitudinal variation in the facility-level Hb variation, Hb measurement frequency, and ESA dose adjustment frequency.
These estimates assess the associations between facility-level Hb variation and Hb measurement frequency and between facility-level Hb variation and ESA dose adjustment frequency.
Figures 3A and 3B provide a graphical summary of the cross-sectional and longitudinal associations between facility-level Hb variation and Hb measurement frequency and between facility-level Hb variation and ESA dose adjustment frequency.
The estimates for cross-sectional and longitudinal parameters for both models were negative, which indicated a consistent negative association between facility-level Hb variation and Hb measurement frequency and between facility-level Hb variation and ESA dose adjustment frequency.
Table 1 provides a summary of the estimates for fixed-effect parameters for the previously described models that evaluated the associations between facility-level Hb variation and Hb measurement frequency and between facility-level Hb variation and ESA dose adjustment frequency.
