-To my understanding, a parallel evaluation design typically refers to an experimental or quasi-experimental design where interventions or treatments are tested simultaneously. However, in this study, the authors collect data from both pilot and non-pilot facilities at the same point in time and compare the outcomes (e.g., hypertension prevention, treatment, and control) between the two groups. This makes it a comparative cross-sectional study. 
-The authors didn't mention the sample size and sampling technique