Earlier studies adopted Phemister fixation methods.
All studies adopted cross-sectional design.
Some of these studies adopted analytical methods, whereas others involved experimental measures.
In the past, almost all studies adopted 2 for kr and k t.
Not all studies adopted methods of sampling from the population of interest with due concern for bias avoidance.
The case studies adopted the same data collection and analysis procedures, involving interviews, questionnaires, observations, and analysis of documents.
Ten studies adopted a repeated measures design and 14 an independent group design (including RCTs and quasi-experimental studies).
Previous studies adopted simple measurements, such as plant-height, stem-diameter and branching-intensity for QTL mapping of plant architecture.
Finally, we present the experimental results of two case studies, adopted to check the verifier's efficiency and scalability.
The review showed that cost studies adopted different approaches to estimate costs of AD, reflecting a lack of consensus on the methodology of cost studies.
Twelve (80%) of the studies adopted a cost-effectiveness or cost-utility approach, with the remaining three taking the cost-benefit approach.
