Table 1:
Descriptive characteristics of Daasanach and Tsimane’ participants
| Variable | Daasanach (n=229) Mean or % (SD) |
Tsimane’ (n=378) Mean or % (SD) |
p-value^ |
|---|---|---|---|
| Age (years) | 39.6 (14.9) | 37.3 (16.7) | 0.10 |
| Sex (% men) | 43.7% | 49.1% | 0.20 |
| Weight | 51.1 (8.2) | 59.2 (8.8) | <0.001 |
| Fat free mass (kg) | 42.3 (6.4) | 45.9 (7.2) | <0.001 |
| TBW (%) | 56.9 (6.0) | 55.1 (6.2) | <0.001 |
| Height (cm) | 167.5 (7.6) | 156.1 (7.4) | <0.001 |
| BMI (kg/m2) | 18.2 (2.8) | 24.2 (3.0) | <0.001 |
| Current thirst perception (1-10) | 5.5 (2.7) | 6.0 (2.7) | 0.03 |
| Perceived pleasantness of drinking water (1-10) | 6.0 (1.9) | 7.9 (2.3) | <0.001 |
| Birth season (% dry season) | 31.0% | 46.7% | <0.001 |
| Urine specific gravity (Usg) | 1.011 (0.008) | 1.020 (0.007) | <0.001 |
| % Usg>1.020 | 18.3% | 55.4% | <0.001 |
| Ambient temperature (°F) | 90.1 (4.9) | 82.0 (5.9) | <0.001 |
| Humidity (%) | 47.4 (12.4) | 78.5 (9.1) | <0.001 |
| Tea/coffee consumption last 24 hours (number of times) | 2.1 (0.80) | -- | -- |
| Milk consumption last 7 days: | -- | -- | |
| 0 times per day (%) | 42.8% | ||
| <1 time per day (%) | 20.5% | -- | |
| 1+ time per day (%) | 36.7% | -- | -- |
| Chewing tobacco last 7 days | 3.3 (3.5) | -- | -- |
| Chicha dulce consumption last 7 days (number of days) | -- | 1.3 (1.4) | -- |
| Fruit water consumption last 7 days (number of days) | -- | 2.0 (2.1) | -- |
| Chewing coca leaves last 7 days (number of days) | -- | 0.60 (1.5) | -- |
^
2 sided t-test; TBW: Total body water; BMI: Body mass index