Table 3. Summary Statistics of 95% Confidence Intervals and Coefficient of Variation of Childhood Obesity Estimates at Block Group, County, and State Levels.
| Geographic Unit | N | Minimum | 1st Quartile | Median | 3rd Quartile | Maximum | Mean | Interquartile Range |
|---|---|---|---|---|---|---|---|---|
| 95% CI | ||||||||
| Block group | 216,206 | 0.80 | 3.57 | 4.57 | 5.66 | 20.04 | 4.71 | 2.09 |
| County | 3,142 | 0.09 | 0.78 | 1.27 | 1.89 | 7.70 | 1.47 | 1.10 |
| State | 51a | 0.04 | 0.07 | 0.10 | 0.17 | 0.44 | 0.13 | 0.10 |
| Coefficient of variation | ||||||||
| Block group | 216,206 | 0.07 | 0.12 | 0.14 | 0.16 | 0.58 | 0.14 | 0.04 |
| County | 3,142 | <0.01 | 0.02 | 0.03 | 0.05 | 0.19 | 0.04 | 0.03 |
| State | 51 | <0.01 | <0.01 | <0.01 | 0.01 | 0.01 | <0.01 | <0.01 |
Abbreviation: CI, confidence interval.
a District of Columbia included in state count.