Table 3.
Analysis of variance of kitchen area NO2 concentrations between and within 1) consecutive sample days and 2) repeated samples throughout the study follow-up period of an LPG cookstove intervention trial in Puno, Peru.
| N of sample pairs | Intraclass Correlat. Coefficient | Coef. of Var. (CV) | |
|---|---|---|---|
| 1st day vs 2nd day of 48-hour samples | |||
| LPG Intervention Group | 76 | 0.68 | 28% |
| Biomass Control Group | 84 | 0.73 | 35% |
| 1st sample and 2nd sample in follow-up period | |||
| LPG Intervention Group | 38 | 0.14 | 49% |
| Biomass Control Group | 38 | 0.57 | 52% |