Pattern and type of data collection for two study groups
| Baseline | Biweekly Nov/Dec | Preintervention | Biweekly Jan/Feb | Mid-term | Biweekly Mar/Apr | End of harvest | |
|---|---|---|---|---|---|---|---|
| Number of field visits | 1 | 2 | 1 | 2 | 1 | 3 | 1 |
| Participants | |||||||
| Inland | 56 | 37 | 42 | 41 | 41 | 41 | 41 |
| Coastland | 60 | 21 | 13 | 41 | |||
| Questionnaire | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Physical exam | Yes | Yes | Yes | Yes | |||
| Biomonitoring | |||||||
| Haemogram* | Yes | Yes | Yes | Yes | |||
| Serum† | Yes | Yes | Yes | Yes | |||
| Basic urine‡ | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Extended urine§ | Yes | Yes | Yes | Yes | |||
| WBGT | Daily in both groups | ||||||
| Water refills | Daily self-report (Inland group) | ||||||
| Difficulty of work | Weekly assessment (Inland group) | ||||||
*Haemogram at Laboratorio CECIAM Escalón, San Salvador.
†Serum chemistry at Lund University.
‡Urine assessments in field only (dipstick, osmolality and microscopic sediment evaluation).
§Urine chemistry at Lund University.
WBGT,wet bulb globe temperature.