Table 1.
Demographic and asthma variables by Grid zone scores†.
| Accurate | Danger | Symptom Magnification | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | F or r | ES†† | Mean (SD) | F or r | ES | Mean (SD) | F or r | ES | |
| Age in years | r = .21** | .43 | r = −.04 | .08 | r = −.23** | .47 | |||
| Child gender | |||||||||
| Female | 71.03 (24.27) | F(1,198)<1.0 | .09 | 8.31 (11.89) | F(1,198)<1.0 | .08 | 20.65 (23.73) | F(1,198)<1.0 | .06 |
| Male | 73.71 (23.30) | 7.65 (10.77) | 18.64 (22.63) | ||||||
| Ethnicity | |||||||||
| White | 77.00 (22.91) | F(1,198) = 19.35*** | .68 | 7.21 (11.28) | F(1,198) = 2.54 | .24 | 15.79 (20.84) | F(1,198) = 15.35*** | |
| Minority | 62.12 (24.65) | 9.68 (11.17) | 28.19 (25.75) | ||||||
| Occupational prestige | r = .24** | .49 | r = −.04 | .08 | r = −.20** | .41 | |||
| Asthma severity | |||||||||
| Mild intermittent | 65.08 (22.94) | F(3,182) = 3.17* | .22 | 13.06 (13.21) | F(3,182) = 2.25 | .19 | 21.86 (26.95) | F(3,182) = 1.44 | .15 |
| Mild persistent | 74.47 (23.71) | 7.35 (11.28) | 18.18 (23.08) | ||||||
| Moderate persistent | 75.69 (21.08) | 5.42 (6.82) | 18.88 (20.60) | ||||||
| Severe persistent | 55.05 (21.35) | 12.47 (18.77) | 32.48 (25.86) | ||||||
| AM2 measurements <80% PEF personal best | – | r = −.46*** | 1.04 | – | r = .36*** | .77 | – | r = .35*** | .75 |
*
p <.05;
**
p <.01;
***
p <.001.
†
Scores = percentage of total blows in each grid zone.
††
Effect sizes for correlations are Pearson’s r-to-d conversions. Cohen’s d represents effect sizes for difference between two means, and eta squared for differences among three or more means.