Basic characteristics of study participants (male sugarcane cutters) from Nicaragua and El Salvador
| Nicaragua | El Salvador | ||
| Burned cane cutters, n (%) | 200 (56) | 98 (100) | |
| Seed cutters, n (%) | 160 (44) | 0 (0) | |
| Age, median (IQR) | 28 (23–33) | 32 (25–39) | |
| Weight in kg, median (IQR) | 64 (59–71) | 65 (57–75) | |
| Height in cm, median (IQR) | 166 (161–171) | 165 (162–170) | |
| Serum creatinine mg/dL, median (IQR) | Before harvest | 1.00 (0.88–1.12) | 0.84 (0.78–0.96) |
| End of harvest | 1.00 (0.89–1.17) | 0.88 (0.81–0.98) | |
| Serum cystatin C mg/L, median (IQR) | Before harvest | 1.10 (1.00–1.25) | 0.92 (0.82–1.10) |
| End of harvest | 1.12 (1.00–1.25) | 0.92 (0.82–1.21) | |
| eGFRcr<60 mL/min/1.73 m2, n (%) | Before harvest | 3 (1) | 9 (9) |
| End of harvest | 10 (3) | 9 (13) | |
| eGFRcys<60 mL/min/1.73 m2, n (%) | Before harvest | 55 (15) | 14 (14) |
| End of harvest | 60 (20) | 13 (19) | |
| eGFRcrcys<60 mL/min/1.73 m2, n (%) | Before harvest | 15 (4) | 10 (10) |
| End of harvest | 31 (10) | 10 (15) | |
eGFRcr, estimated glomerular filtration rate based on creatinine; eGFRcrcys, estimated glomerular filtration rate based on both creatinine and cystatin C; eGFRcys, estimated glomerular filtration rate based on cystatin C.