Table 2 Maternal and familial characteristics by cluster estimation method and type
From: Comparison of spatial scan statistic and spatial filtering in estimating low birth weight clusters
Methods | Filtering Sizes or Maximum Spatial Cluster Sizes (miles) | Significance | Total Births within Cluster | Maternal Ethnicity within Cluster | Average Percentage of Mothers having Some College Education within Cluster | Average Percentage of Families Below Poverty level | ||
|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | Â | Caucasian | African American | Others | Â | Â |
Spatial filtering | 0.40 | ≥ 0.95% level | 1,250 | 1.4% | 98.3% | 0.2% | 13.9% | 48.7% |
|  | 0.50 | ≥ 0.95% level | 2,509 | 2.1% | 97.6% | 0.3% | 16.2% | 40.6% |
|  | 0.60 | ≥ 0.95% level | 7,288 | 6.5% | 92.4% | 1.1% | 19.6% | 36.0% |
SaTScan | 0.40 | P1 (most likely) = 0.002 | 141 | 0.0% | 100.0% | 0.0% | 14.9% | 49.7% |
| Â | Â | P2 (secondary) < 0.05 | 311 | 1.0% | 98.4% | 0.6% | 9.6% | 61.2% |
| Â | 0.50 | P1 (most likely) = 0.001 | 184 | 0.0% | 100.0% | 0.0% | 12.5% | 31.9% |
| Â | Â | P2 (secondary) < 0.05 | 437 | 5.0% | 93.8% | 1.1% | 16.9% | 34.7% |
| Â | 0.60 | P1 (most likely) = 0.001 | 268 | 0.0% | 99.6% | 0.4% | 11.6% | 58.1% |
| Â | Â | P2 (secondary) < 0.05 | 820 | 3.0% | 96.3% | 0.6% | 13.2% | 43.2% |