Table 4

Comparison of self-reported hydration indicators per 24 hours between harvests 2 and 1

JobWater (L)Boli (N of 0.3 L bags)
Median (IQR)Additional water drunk harvest 2 vs 1 (95% CI)Median (IQR)Additional boli drunk harvest 2 vs 1 (95% CI)
NHarvest 1NHarvest 2NHarvest 1NHarvest 2
Field support staff426 (4–7)536 (4–8)0.3 (−0.9 to 1.4)423 (2–4)533 (0–4)0.0 (−0.6 to 0.7)
Irrigation repair workers1096 (4–8)918 (6–10)1.6 (0.8 to 2.4)1093 (0–4)924 (2–5)1.0 (0.4 to 1.6)
Seed cutters1486 (5–8)1769 (7–11)2.7 (2.0 to 3.3)1482 (0–3)1764 (3–5)1.5 (1.1 to 1.9)
Burned cane cutters127*7 (5–10)16810 (8–12)1.9 (1.3 to 2.6)127*2.5 (0–3.5)1684 (2–5)1.1 (0.6 to 1.5)
  • Bold indicate changes significant at p<0.05.

  • *One worker had missing data.

  • †Modelled using mixed effects linear regression

  • ‡Modelled using zero-inflated Poisson regression