Mean and SD of Total Lung Counts According to Degree of Self-Reported Inhalation
| Degree of inhalation | No. of subjects | Mean | SD |
|---|---|---|---|
| Never/rarely | 19 | 5,590.68 | 6,130.57 |
| Sometimes | 3 | 13,195.00 | 10,730.32 |
| Usually/always | 2 | 11,772.00 | 13,754.64 |
| Total | 24 | 7,056.33 | 7,501.65 |
χ22 value for Kruskal-Wallis test = 2.71, P > 0.05.