2.2 Evaluation of Literature Quality
The quality of the PPK report was evaluated according to previous
guidelines of PK reports (Kanji et al. [17] and Jamsen et al.
[18]) that assist in transparent and complete reporting. A checklist
with 24 items was developed to summarise the key points of the report.
All items were categorised into five sections: the title and abstract,
background and introduction, methods, results, and discussion and
conclusion, according to their relevance to the sections of the research
report.
If there was a description in the paper that conforms to the criterion,
the scoring item will be counted as 1 point. If it was not reported,
zero points were given. Each identified study was evaluated based on
these criteria. Compliance of the included PPK studies was reported as a
proportion. The compliance rate was calculated as follows:
\begin{equation}
\text{compliance\ rate\ }\left(\%\right)=\frac{\text{sum\ of\ reported\ items}}{\text{sum\ of\ all\ items}}\times 100\%\nonumber \\
\end{equation}