Comparison of paired colostrum and placental samples from sheep showed that C. burnetii was found more frequently in placental samples (8 ), which suggested that the placenta is a better sample than milk for surveillance purposes.
A 24-h urine collection, although less practical, would have been a better sampling strategy given the large influence of the absorption rate on excretion during the first hours following an exposure [ 9, 10].
The poor concordance between the results of GM detection from the two sample methods in our retrospective single center study suggests that the addition of BW to BAL GM detection enhances positive results or it might be a better single diagnostic sample for GM antigen detection.
The observation that phospho-Akt staining reached the lumen in all cases, suggests that exploration of the role of detection of phospho-Akt in specimens from brush cytology of the whole oesophagus or upper gastrointestinal liquid aspirates might be a better way of sampling the whole Barrett's segment [ 37, 38].
In relation to design optimization it could be a better choice to accept lower sampling intensities and resulting higher standard errors and invest into the improvement of models and functions.
The sampling may not be representative and respondent-driven sampling may be a better design.
As we have argued above, for some policy questions the FT sample should be a better basis for making gender comparisons.
Hence, the sample could be a better representative of the English language learners, from low- proficient learners to high proficient ones.
In some cases, the caulking has clearly lost its elasticity and the extent of degradation in any caulking material sample may be a better predictor of the amount of PCBs that can be mobilized than the bulk PCBs content of the caulk.
Qualitative research using snowball sampling could be a better approach for reaching these groups.
