Table 1.

Participant characteristics, late-harvest eGFR, and late-harvest kidney injury biomarker results by job category (n=251)

CharacteristicsOverallNonfield WorkersField Workers
DriversFactory WorkersCane CuttersIrrigatorsAgrichemical ApplicatorsSeed CuttersSeeders/Reseeders
Total, N (%)251 (100)41 (16)57 (23)51 (20)49 (20)29 (12)9 (4)15 (6)
Age, yr
 Mean33.940.936.330.530.334.727.131.7
 Median3141.03628.028.035.02729
 SD10.511.29.910.68.88.23.710.0
 Range18–63.524.0–60.020–5718.0–63.519.0–48.021.0–51.023–3419–56
Employment duration, yr
 Mean10.114.414.23.69.71227.3
 Median713.0131.07.012.015
 SD9.28.910.75.38.08.02.36.2
 Range0–401.0–35.00.08–400–27.00–32.00–30.00–62–22
eGFR (ml/min per 1.73 m2)
 Mean112.4110.2114.8108.2115.5114.4112.3110.38
 SD19.014.216.226.316.913.720.924.1
 Range28.9–180.978.3–139.376.2–180.928.9–150.245.7–142.781.8–138.863.3–128.656.8–143.7
NAG (U/g)
 GM0.900.680.601.50.900.930.631.6
 GSD2.82.32.82.13.52.33.53.0
NGAL (µg/g)
 GM10.47.56.819.314.76.96.215.3
 GSD3.42.24.32.93.33.21.72.9
IL-18 (ng/g)
 GM8.89.96.412.67.58.55.414.8
 GSD3.12.93.13.52.83.02.73.1
ACR (mg/g)
 GM2.42.01.62.04.22.71.06.6
 GSD3.64.43.12.83.63.22.93.3
  • Urine analytes are normalized to the urine creatinine concentration. NAG, N-acetyl-β-d-glucosaminidase; GM, geometric mean; GSD, geometric SD; NGAL, neutrophil gelatinase-associated lipocalin; ACR, albumin-creatinine ratio.