TABLE 1.
Demographic and Clinical Characteristics
| Water Group (n=16) | Electrolyte Group (n=14) | |||||||
|---|---|---|---|---|---|---|---|---|
| Control day | Water 169 oz (5 L) | Control day | Electrolyte 169 oz (5 L) | |||||
| n | %, mean [std], or median (q1, q3) |
n | %, mean [std], or median (q1, q3) |
n | %, mean [std], or median (q1, q3) |
n | %, mean [std], or median (q1, q3) |
|
| Demographics and Work Female | 12/16 | 75% | 11/14 | 79% | ||||
| Married/coupled | 12/16 | 75% | 11/14 | 79% | ||||
| Age, years | 16 | 39 (36, 47) | 14 | 44 (37, 47) | ||||
| BMI | 16 | 28 (25, 33) | 14 | 30 (28, 31) | ||||
| Years in AgricultureĆWork Type | 16 | 13 (6, 20) | 14 | 16 (11, 19) | ||||
| Fernery | 5/16 | 31% | 5/16 | 31% | 6/14 | 43% | 6/14 | 43% |
| Nursery | 9/16 | 56% | 9/16 | 56% | 7/14 | 50% | 7/14 | 50% |
| Yardwork | 2/16 | 13% | 2/16 | 13% | 1/14 | 7% | 1/14 | 7% |
| Hours Worked | 16 | 9.3 (7.3, 10.5) | 16 | 9.5 (8.8, 10.5) | 14 | 8.7 (5.5, 9.0) | 14 | 8.8 (6.0, 9.5) |
| Heat Index, per person mean | 16 | 89.6 [5.5] | 16 | 92.3 [5.1] | 14 | 90.1 [4.7] | 14 | 91.7 [3.8] |
| Heat Index, per person max Beverage Consumption | 16 | 102.6 [4.7] | 16 | 102.0 [4.3] | 14 | 102.8 [4.3] | 14 | 101.2 [3.4] |
| Total overall, oz | 16 | 80 (64, 100) | 16 | 134 (98, 165) | 14 | 62 (44, 88) | 14 | 119 (93, 146) |
| Provided hydration beverage | - | 116 (85, 156) | - | 14 | 103 (85, 132) | |||
| Total per hour, oz | 16 | 8 (7, 15) | 16 | 15 (11, 19) | 14 | 9 (5, 11) | 14 | 15, (13, 19) |
| Water (personal provisions) | 16 | 64 (40, 80) | 15 | 0 (0, 16) | 14 | 42 (32, 72) | 12 | 0 (9, 16) |
| Sugary drinks (sports, energy, juice, sugared soda) | 16 | 12 (0, 26) | 15 | 0 (0, 16) | 14 | 14 (0, 24) | 13 | 4 (0, 12) |
| Clinical VariablesĆUSG | ||||||||
| Pre-work | 15 | 1.023 (1.013, 1.025) | 16 | 1.020 (1.017,1.023) | 12 | 1.018 (1.015, 1.023) | 14 | 1.019 (1.015, 1.027) |
| Post-work | 16 | 1.015 (1.006, 1.022) | 16 | 1.005 (1.002, 1.009) | 12 | 1.021 (1.015, 1.029) | 14 | 1.018 (1.005, 1.025) |
| eGFR (mL/min/1.73 m2) | ||||||||
| Pre-work | 14 | 115.6 (109.6, 122.3) | 16 | 114.2 (109.8, 124.3) | 12 | 122.5 (112.5, 130.6) | 14 | 120.1 (110.5, 127.1) |
| Post-work | 13 | 111.4 (97.2, 117.4) | 13 | 104.9 (96.4, 120.1) | 12 | 112.3 (82.9, 119.7) | 11 | 124.7 (109.3,127.3) |
| eGFR < 90 mL/min/1.73 m 2 | ||||||||
| Pre-work | 0/14 | 0% | 0/16 | 0% | 0/12 | 0% | 0/14 | 0% |
| Post-work | 3/13 | 23% | 2/13 | 15% | 5/12 | 42% | 0/11 | 0% |
| AKI | 1/11 | 9% | 3/13 | 23% | 3/10 | 30% | 0/11 | 0% |
AKI indicates acute kidney injury; eGFR, estimate glomerular filtration rate.