Modeling the Marked Presence-Only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi, by Ian Laga, Xiaoyue Niu & Le Bao
# Modeling the Marked Presence-Only Data: A Case Study of Estimating the Female Sex Worker Size in Malawi
# Author Contributions Checklist Form
## Data
**Abstract (Mandatory)**
The four main data components used in the analysis are the Malawi PLACE data, DHS data,
nighttime-light data, and WorldPop data. The PLACE data represent the response, while the
DHS, nighttime-light, and WorldPop data are the covariates used in analysis. A shapefile of
Malawi was also used in ArcMap to extract nighttime-light data and in R for analysis.
**Availability (Mandatory)**
- The Malawi PLACE data has not been publicly available yet. Access to the PLACE I
data and report can be requested at
doi.org. PLACE II data
and report can be requested by emailing Dr. Sharon Weir at sharon_weir@unc.edu.
- The DHS data can be obtained with permission from the DHS Program. Registration is
available at
dhsprogram.com.
Nighttime-light data can be obtained with permission from
payneinstitute.mines.edu
- WorldPop data is publicly available at
worldpop.org
- The shapefile is publicly available and can be downloaded using the link provided below.
gadm.org.
**Description (Mandatory if data available)**
- PLACE Data:
o Permission to use the PLACE data was granted by PLACE study.
o The PLACE data was provided from Dr. Sharon Weir directly in two files:
“Venue_GPS.sas7bdat” and “FORM B data for willing and operational
venues.xlsx”.
o “Venue_GPS.sas7bdat” contained 7 values about 3013 venues: GPS, Latitude,
Longitude, Accuracy, operational, b5a (district), and siteid.
o “FORM B data for willing and operational venues.xlsx” contained a sheet that
included answers from the Form B in the PLACE study. The primary columns
used for analysis were the venue ID, district, and estimates of the number of
FSW working at the venues
o The sheet “RawData” from “FORM B data fo …