Table 2 Experiment 2: Comparison of ventilation using CO2 data loggers between different typologies of housing
From: Measuring ventilation in different typologies of rural Gambian houses: a pilot experimental study
Typology comparison | Method | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Method B: Artificial CO2 elevation and decay (n = 5) | Method C: Natural CO2 elevation and decay* (n = 6) | Method D: Natural CO2 rise (n = 6) | |||||||||||||
Control house, mean ACH m3/h (95% CI) | Test house, mean ACH m3/h (95% CI) | Difference, mean ACH m3/h (95% CI) | t | p | Control house, mean ACH m3/h (95% CI) | Test House, mean ACH m3/h (95% CI) | Difference, mean ACH m3/h (95% CI) | t | p | Control house, mean ACH m3/h (95% CI) | Test house, mean ACH m3/h (95% CI) | Difference, mean ACH m3/h (95% CI) | t | p | |
| − 38.1 (− 42.2, − 34.0) | − 132.2 (− 182.6, − 81.8) | 94.1 (43.0, 145.1) | 5.112 | 0.007 | − 11.3 (− 23.4, − 0.8) | − 31.6 (− 44.5, 18.7) | 20.3 (4.4, 36.2) | 3.280 | 0.022 | 13.2 (9.4, 17.0) | 0.1 (− 2.3− 2.4) | 13.1 (11.3, 15.0) | 18.071 | < 0.001 |
| − 22.0 (− 33.0, − 13.0) | − 23.7 (− 34.2, − 13.1) | 1.6 (− 11.3, 14.6) | 0.347 | 0.746 | − 12.4 (− 16.9, − 7.8) | − 8.0 (− 15.7, − 0.3) | − 4.3 (− 13.3, 4.7) | − 1.236 | 0.271 | 14.1 (10.2, 18.0) | 11.1 (7.2, 14.9) | 3.1 (− 0.2, 6.4) | 2.396 | 0.062 |
| − 12.2 (− 33.1, 8.6) | − 120.2 (− 156.9, − 83.6) | 108.0 (55.2, 160.8) | 5.681 | 0.005 | − 7.6 (− 12.7, − 2.6) | − 42.2 (− 55.8, − 28.5) | 34.5 (20.7, 48.4) | 6.405 | 0.001 | 14.7 (12.9, 16.6) | 6.1 (4.2, 8.1) | 8.6 (6.2, 11.0) | 9.317 | < 0.001 |
| − 24.2 (− 42.6, − 5.8) | − 151.5 (− 202.1, − 100.9) | 127.3 (74.6, 180.1) | 6.699 | 0.003 | − 5.8 (− 15.0, 3.4) | − 36.2 (− 49.0, − 23.4) | 30.4 (13.3, 47.6) | 4.556 | 0.006 | 13.3 (12.1, 14.5) | − 1.3 (− 4.2, 1.6) | 14.6 (11.6− 17.6) | 12.349 | < 0.001 |
