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Table 2 Summary of health, exposure, and other participant and household measurements

From: Study protocol for a stepped-wedge randomized cookstove intervention in rural Honduras: household air pollution and cardiometabolic health

Measurement Description Source Groups Measured Timinga
Primary health endpoints Blood pressure (brachial systolic and diastolic)
C-reactive protein (systemic inflammation)
Glycated hemoglobin (HbA1c)
SphygmoCor XCEL monitor
Dried blood spots
Finger-stick point-of-care instrument
All participants
All participants
All participants
All 6 visits, day 2
All 6 visits, day 2
All 6 visits, day 2
Secondary health endpoints Other biomarkers of systemic injury and inflammation
Metabolomics
Augmentation index and central pulse pressure
Blood lipids (LDL, HDL, total cholesterol, triglycerides)
Self-reported health symptoms
Fractional exhaled nitric oxide (airway inflammation)
Telomere length from buccal cells
Dried blood spots
Dried blood spots
SphygmoCor XCEL
Finger-stick point-of-care instrument Questionnaires
NIOX Vero and Aero monitors
Buccal scrapes
All participants
All participants
All participants
All participants
All participants
Sub-set of participants
Sub-set of participants
All 6 visits, day 2
Visit 1
All 6 visits, day 2
All 6 visits, day 2
All 6 visits, day 2
All 6 visits, day 2
Visits 1-4, day 2
Exposure assessments Assigned stove type Randomization All participants See Table 1 scheme
Kitchen
 PM2.5
 Black carbon
 Ultrafine PM
 Real time and gravimetric PM2.5
 Carbon monoxide
Triplex cyclone and AirChek pump
PM2.5 Filters and Sootscan
Discmini
Personal Data Ram
Dräger Pac 7000
All kitchens
All kitchens
Sub-set of kitchens
Sub-set of kitchens
All kitchens
All 6 visits, 24-hours
All 6 visits, 24-hours
Visits 1-4, 24-hours
Visits 1-4, 24-hours
Visits 1-3, 24-hours
Personal
 PM2.5
 Black carbon
 Compliance with wearing monitors
 Carbon monoxide
Triplex cyclone and AirChek pump, UPAS
PM2.5 Filters and Sootscan
Accelerometer
Dräger Pac 7000
All participants
All participants
All participants
All participants
All 6 visits, 24-hours
All 6 visits, 24-hours
All 6 visits, 24-hours
Visits 1-3, 24-hours
Other sources of household air pollution Neighbors, traffic, trash burning, kerosene use
Smoking status (cigarettes and puro)
Secondhand smoke exposure
Questionnaires
Questionnaires
Screening
All participants
All participants
All participants
All 6 visits, day 1
Screening and all 6 visits, day 2
Screening
Stove use Self-reported use of all cookstoves, behaviors
Electronic monitoring of cookstove temperature
Justa cookstove maintenance, changes, preferences
Time cooking separately for animals
Questionnaires
Stove Use Monitors (SUMs)
Questionnaires
Questionnaires
All participants
All cookstoves
Justa recipients
All participants
All 6 visits, day 2
All 6 visits, 24-hours
Visits 3-6, day 2
All 6 visits, day 2
Household and kitchen characteristics Elevation and GPS coordinates
Kitchen temperature and humidity
Kitchen ventilation/openings
Kitchen location, size, and housing materials
Maps.me on smart phones
EasyLog monitor
Questionnaires
Questionnaires
All households
All kitchens
All kitchens
All kitchens
Visit 1 (repeated if new house)
All 6 visits, 24-hours
Visit 1 (repeated if new house)
Visit 1 (repeated if new house)
Socioeconomic and demographics Income sources
Material items, electricity, education, beds, age Household size, age of youngest child
Questionnaires
Questionnaires
Questionnaires
All participants
All participants
All participants
All 6 visits, day 1
Visit 1, day 1
All 6 visits, day 1
Other health-related measures Illnesses, previous diagnoses
Medication and vitamin use
24-hour dietary recall and diversity
Weekly physical activity
Body mass index (BMI), waist and hip circumference
Pregnancy
Questionnaires
Questionnaires
Questionnaires
Questionnaires
Anthropometric measures
Screening and Questionnaires
All participants
All participants
All participants
All participants
All participants
All participants
All 6 visits, day 2
All 6 visits, day 2
All 6 visits, day 2
All 6 visits, day 2
All 6 visits, day 2
Screening and all 6 visits, day 1
  1. aWomen received six repeated measures over the 3-year study period, with approximately six months between visits. Each study visit included two consecutive days of data collection: day 1 set-up of all exposure monitors, and day 2 take-down of monitors and collection of health measures. Further details on timing and collection procedures can be found in the “Study visits” section