Table 1.
Descriptive statistics and results for Brown–Forsythe test
| r | Population
|
Incidence rate/100,000 births
|
Brown–Forsythe
|
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | Max | M | Mdn | Min | Max | M | Mdn | Variance | FBF1 | df1 | CV | FBF2 | df2 | CV | |
| 1,000 | 1 | 33 | 6.1 | 5 | 0 | 66,667 | 1003.4 | 0 | 20,571,812 | 3.99 | 9 | 1.88 | — | — | — |
| 1,500 | 1 | 64 | 11.0 | 9 | 0 | 50,000 | 1056.0 | 0 | 14,896,288 | 5.53 | 8 | 1.94 | 0.63 | 1 | 3.84 |
| 2,000 | 1 | 90 | 17.3 | 14 | 0 | 50,000 | 1081.4 | 0 | 10,762,540 | 6.59 | 7 | 2.01 | 0.84 | 2 | 3.00 |
| 2,500 | 1 | 126 | 25.0 | 20 | 0 | 33,333 | 1046.4 | 0 | 7,735,246 | 5.53 | 6 | 2.10 | 0.64 | 3 | 2.61 |
| 3,000 | 1 | 175 | 33.9 | 28 | 0 | 33,333 | 1016.9 | 0 | 5,797,722 | 4.45 | 5 | 2.21 | 0.66 | 4 | 2.37 |
| 3,500 | 1 | 221 | 44.0 | 36 | 0 | 25,000 | 989.8 | 0 | 4,489,869 | 3.36 | 4 | 2.37 | 0.93 | 5 | 2.21 |
| 4,000 | 1 | 285 | 55.2 | 45 | 0 | 20,000 | 963.9 | 0 | 3,619,704 | 2.31 | 3 | 2.61 | 1.42 | 6 | 2.10 |
| 4,500 | 1 | 345 | 67.5 | 56 | 0 | 14,286 | 941.5 | 0 | 2,935,198 | 1.48 | 2 | 3.00 | 2.09 | 7 | 2.01 |
| 5,000 | 2 | 388 | 80.7 | 67 | 0 | 12,903 | 919.3 | 0 | 2,443,491 | 0.73 | 1 | 3.84 | 2.95 | 8 | 1.94 |
| 5,500 | 2 | 427 | 94.8 | 80 | 0 | 11,111 | 899.2 | 0 | 2,081,109 | — | — | — | 3.99 | 9 | 1.88 |
Note: Bold figures in the FBF1 and FBF2 columns are the upper and lower limit of neighborhood scale, and the bold figure in the r column is the neighborhood size chosen for this analysis. r = size of the neighborhood radius in meters; df = degrees of freedom; CV1 and CV2 = critical values at 95 percent confidence level for FBF1 and FBF2.