Problems with lack of systematic sampling frames for drug users have been discussed extensively in the literature and the inherent difficulties have to be acknowledged [ 27].
For example, one study described the method for random sampling, four studies used a systematic sample frame (e.g. consecutive cases), one study used a mixed frame (e.g. random sampling of consecutive cases), and four studies did not use a sample frame (i.e., convenience sampling).
Systematic reviews framed by PICOS (Populations, Interventions, Comparisons, Outcomes, and Study designs) have been valuable for synthesizing evidence about the effects of interventions.
A major limitation of the data set is the lack of a systematic sampling frame across the different sites.
Together they developed a systematic coding frame, and RTC used this to assign segments of transcripts to coding categories.
A systematic coding frame (compiled with the input of two gynaecologists: Professor Usha Menon and Dr Aarti Sharma) was used to ensure symptoms were classified consistently.
Two researchers (RTC and AP) independently read and re-read every comment, developing a systematic coding frame that reflected both anticipated and emergent themes.
Wherever yeast genes were annotated as gene symbols rather than systematic open reading frames (ORFs), we translated all annotations to systematic ORF names using a table of chromosomal features downloaded from the Saccharomyces Genome Database (http://downloads.yeastgenome.org/curation/chromosomal_feature/dbxref.tab) on May 5, 2015.
This paper attempts to examine the status and progress of e-government enterprise architecture research in China in a systematic approach and frame a research agenda.
The research employed systematic analysis by framing urgency of the problem based on relevant journal accordingly of the relevant work, summarize information gathered and finally interpreted the information.
