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Estimating Prevalence of Overweight or Obese Children and Adolescents in Small Geographic Areas Using Publicly Available Data

ORIGINAL RESEARCH — Volume 12 — March 12, 2015

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The northern area of Atlanta has lower prevalence estimates for children and adolescents who are overweight or obese, whereas some areas of the eastern, western, and southern parts of the city have higher prevalence estimates. There is also a band of high prevalence running southwest to northeast across the middle of the state.

Figure 1. Prevalence estimates of a high body mass index among children and adolescents aged 10 to 17 in census tracts in Georgia in 2010. The gray areas indicate areas with no population (eg, airports, parks).

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County County No. Estimated Prevalence of High Body Mass Index, % Estimated Number of Children with High Body Mass Index
Gwinnett 13135 33.1 210,789
Fulton 13121 33.4 194,766
Cobb 13067 32.9 157,838
Dekalb 13089 34.6 144,462
Clayton 13063 35.9 66,450
Henry 13151 33.6 54,486
Chatham 13051 34.5 52,468
Cherokee 13057 31.7 53,061
Hall 13139 35.3 44,691
Richmond 13245 35.5 43,417
Muscogee 13215 34.9 42,900
Forsyth 13117 30.5 48,578
Paulding 13223 32.8 38,912
Bibb 13021 35.8 35,524
Douglas 13097 34.3 33,807
Houston 13153 33.7 33,529
Coweta 13077 33.0 31,206
Columbia 13073 32.2 30,681
Whitfield 13313 36.7 26,179
Newton 13217 34.4 26,057
Fayette 13113 32.6 26,414
Carroll 13045 34.0 25,047
Bartow 13015 34.1 24,150
Lowndes 13185 34.4 23,613
Dougherty 13095 36.4 21,498
Floyd 13115 34.8 21,004
Rockdale 13247 35.1 20,669
Walton 13297 33.5 20,417
Clarke 13059 35.0 17,569
Glynn 13127 34.2 17,119
Barrow 13013 33.0 17,340
Liberty 13179 33.8 16,466
Troup 13285 34.8 15,975
Spalding 13255 35.3 14,403
Walker 13295 33.7 14,607
Jackson 13157 33.4 14,410
Catoosa 13047 32.6 14,422
Gordon 13129 34.9 13,281
Effingham 13103 33.3 13,551
Bulloch 13031 33.8 12,779


Figure 2. The prevalence of high body mass index (BMI) in the 25% of counties (n = 39) in Georgia with the greatest estimated number of children and adolescents with high BMI. Of all children and adolescents with high BMI in Georgia, 77% reside in these 39 counties. These counties are strongly correlated with population centers. Gray areas indicate the other 75% of counties.

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County Minimum 25th Percentile Median 75th Percentile Maximum
Clarke 25.8 32.6 34.0 37.1 41.7
Fulton 26.3 30.6 34.7 37.0 40.4
Dekalb 26.9 31.3 35.1 36.3 39.9
Muscogee 28.9 32.9 35.5 37.1 40.4
Richmond 29.8 34.3 35.9 36.8 40.0
Bibb 30.8 33.8 36.3 38.1 41.0
Chatham 29.5 32.8 34.9 37.4 39.5
Gwinnett 28.7 31.8 33.3 34.6 38.3
Liberty 29.3 33.3 34.2 34.7 38.9
Cobb 28.6 30.7 32.2 34.4 37.9
Houston 28.7 32.4 34.1 35.0 37.6
Hall 31.5 33.3 34.3 36.6 40.0
Whitfield 33.2 34.4 35.6 38.4 41.0
Lowndes 30.6 32.6 33.9 35.9 38.4
Spalding 31.9 33.9 35.0 36.3 39.4
Greene 32.6 35.9 36.5 37.8 39.9
Dougherty 32.6 34.6 36.5 37.5 39.7
Forsyth 27.6 29.3 31.3 32.3 34.5
Glynn 30.3 32.1 33.5 36.0 37.1
Laurens 33.5 33.8 35.4 36.3 39.8
Coweta 29.7 32.2 32.5 33.2 35.8
Floyd 31.9 33.5 34.2 37.0 38.0
Ware 32.6 34.2 34.9 36.2 38.5
Chattahoochee 28.6 29.3 31.1 33.0 34.4
Carroll 32.5 33.5 34.2 34.6 38.1
Walton 30.9 32.5 33.0 33.7 36.3
Troup 32.1 33.5 34.6 36.2 37.4
Habersham 32.3 32.9 34.1 35.0 37.5
Camden 29.4 31.7 32.8 33.6 34.5
Rockdale 33.5 33.9 34.6 36.0 38.6
Decatur 34.1 35.3 36.7 37.2 39.1
Bulloch 32.8 33.1 34.4 35.2 37.7
Tift 33.2 33.9 35.6 36.7 38.0
Cherokee 29.8 30.8 32.1 32.8 34.4
Peach 33.3 34.7 36.9 37.6 37.9
Jackson 30.8 32.5 33.5 34.0 35.3
Putnam 33.2 34.4 34.8 37.1 37.7
Fayette 30.4 31.6 32.3 33.7 34.8
Baldwin 34.1 35.1 36.1 37.9 38.5
Columbia 30.3 31.1 32.5 33.1 34.6
McDuffie 33.9 35.6 36.0 36.6 37.8
Bryan 30.6 31.4 32.1 33.1 34.6
Coffee 34.2 35.3 35.4 35.8 38.1
Walker 30.9 33.3 33.9 34.5 34.9
Lee 31.6 32.9 33.5 33.7 35.5
Clayton 33.8 35.2 35.9 36.5 37.7
Irwin 32.7 33.7 34.6 35.6 36.6
Mitchell 35.8 36.1 37.0 37.1 39.6
Paulding 30.6 32.4 33.0 33.4 34.4
Tattnall 34.7 35.7 35.8 36.2 38.4


Supplementary Figure. Prevalence-estimate ranges across census tracts for the 50 counties in Georgia with the largest ranges. The vertical line in the middle of each box indicates the median; the left and right borders of the box represent the 25th and 75th percentiles, respectively; the right and left whiskers mark the minimum and maximum, respectively; the dots represent outliers as determined by 1.5 times the difference between the 25th and 75th percentiles.

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