Table 1.
Data Collection at Each Study Visit for a Prospective Family Cohort Study in Kamphaeng Phet, Thailand, 2015–2019
| Questionnaire | Direct Measurement | Document Review | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Study Visit | Demographic Data a | Clinical Data b | Household Data c | Weight | Oral Temperature | GPS Mapping | Vaccination Records | Hospital Records, If Applicable | Mosquito Collection d | Human Movement Surveyd |
| Enrollment | X | X | X | X | X | X | ||||
| Annual follow-up | X | X | X | X | X | X | X | |||
| Acute illness investigation | X | X | X | |||||||
| 14- and 28-day convalescent | X | X | ||||||||
| 0-, 14-, and 28-day household contact evaluation | X | X | X | X | X | |||||
Abbreviation: GPS, Global Positioning System.
a Demographic data collected on enrollment include date of birth, sex, education, occupation. These data are updated annually.
b Clinical data collected on enrollment include vaccination history, history of dengue illness, and comorbidities. These data are updated annually and verified against personal vaccination booklets whenever possible. Clinical data collected during acute illness and household investigations include clinical symptoms (onset and duration), care-seeking behavior (hospital and clinic visits, over-the-counter and prescription medications taken), and risk factors (ill contacts, recent travel). If an individual was hospitalized with a febrile illness at a collaborating hospital, hospital records will be reviewed, including physician and nursing notes, laboratory and radiological results, and admission and discharge diagnoses.
c Household data collected on enrollment include housing construction materials, sanitation practices, and water source, location, land use. These data are updated annually.
d Entomological and human movement surveys are performed for all households undergoing household investigations (i.e., in the setting of confirmation of an acute dengue illness by reverse-transcriptase polymerase chain reaction). Trapping of mosquitoes occurs on days 0 and 14; mote deployment on day 0 only. Entomological and movement surveys are also performed for a random subset of households during annual follow-ups.