In either plane, if the sonographer were not cognizant of this movement, measurement of the diameter at end inspiration and end expiration would occur at different anatomic locations, potentially introducing error in the measured respiratory variation.
Additionally, some authors have truncated data collected over 10 or more years to only 5 years, introducing error in survival predictions and contributing to difficulty in verification.
We did not collect information on such medication use, potentially introducing error in our spirometry measurements, especially the large airway obstruction measures.
Furthermore, newly registered foreign recruits may list their recruitment agency address initially, introducing error in SHA assignment for newly registered immigrants (though this should disappear upon reregistration).
Our data also does not account for patient mobility, where a patient may have relocated from a more remote location to one that is in closer proximity to their nephrology care, thus potentially introducing error in the distance classification for those patients.
The loss of the trends in the two histone marks may partly be due to the breadth of those signals often spanning the entire genic regions, thus introducing error in estimation of precise proportions of those signals, which can overwhelm real signals in a relatively small dataset.
