Table 1 An individual health questionnaire administered to everyone enrolled in the study

Individual ID

ABCDE100

Fieldworker ID

TO01

Illness over past 2 weeks

Yes; no

If illness reported: what symptoms?

(1) Diarrhoea, (2) fever, (3) vomiting, (4) rash, (5) bowel ache, (6) head ache, (7) cough/sore throat, (8) joint pain, (9) dizziness, (10) other (manually specify)

Fever over the last 2 days?

Yes; no

Current fever?

Yes, no

Under malaria treatment now?

Yes; no

If illness or fever reported: take temperature measurement

If temperature 37.4 °C or above: RDT test

(1) Negative, (2) P. falciparum, (3) other Plasmodium, (4) mixed malaria infection, (5) respondent refused to take test

Do you suffer respiratory symptoms?

Yes, no

If respiratory symptoms are experienced: Did you seek medical attention?

Yes, no

If medical attention: what medical attention was sought?

(1) Doctor, (2) nurse, (3) community health worker, (4) traditional healer, 5) other (manually specify)

Do you use any drug for the fever?

Yes, no

If using drugs against fever: which drugs?

(1) Anti malarials, (2) antibiotics, (3) pain killers, (4) other (manually specify)