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Table 1 Geographical clusters of low birth weight in New York City in 2004.

From: A scan statistic for continuous data based on the normal probability model

  Inside Cluster Outside Cluster Weight  
Cluster #Births Mean Weight (g) #Births Mean Weight (g) Difference (g) P-value
Brooklyn/Queens 27772 3236 81152 3296 60 0.001
Manhattan/Bronx 16258 3236 92666 3288 52 0.001
Staten Island 617 3221 108307 3281 60 0.90