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Table 1 Anthropometric, demographic and behavioural characteristics of workers at two underground mines by mean* hydration status (n=83)

From: Hydration status of underground miners in a temperate Australian region

Measure Category Hydrated n (%) Dehydrated n (%)
Age (years) 18-29 9 (26.5) 5 (10.2)
30-49 17 (50.0) 30 (61.2)
50-69 5 (14.7) 4 (8.2)
  Incomplete 3 (8.8) 10 (20.4)
Distance from home to work (km) 0-39 18 (52.9) 25 (51.0)
40-99 11 (32.4) 14 (28.6)
≥100 2 (5.9) 0 (0.0)
  Incomplete 3 (8.8) 10 (20.4)
Most common drink at work Water 29 (85.3) 41 (83.7)
Other 2 (5.9) 0 (0.0)
  Incomplete 3 (8.8) 8 (16.3)
Body mass index (kg/m 2 ) ** Normal 4 (11.8) 4 (8.2)
Overweight 20 (58.8) 24 (49.0)
  Obese 10 (29.4) 21 (42.9)
Waist circumference (cm) Healthy range 16 (47.1) 17 (34.7)
Risk range 13 (38.2) 12 (24.5)
  High risk range 5 (14.7) 20 (40.8)
  1. *Average of pre-shift and post-shift USG result: Hydrated <=1.020, Dehydrated >1.020.
  2. All category ranges are for adult males.
  3. **BMI ranges: Normal (18.50-24.99); Overweight (25.00-29.99); Obese (≥30.00).
  4. Waist circumference ranges: Healthy range (<94); Risk range (94–102); High risk range (>102).