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. 2018 Sep 11;96(3):568–592. doi: 10.1111/1468-0009.12342

Table 2.

Vaccine Providers per Census Tract (Rates per 3,500 People)a

Provider Rate at Each Percentile
Mean (SD)b 25th Percentile 50th Percentile 75th Percentile Adequate Vaccine Provider Coverage
Physicians
Overall 1.73 (4.19) 0 0 1.59 33% (1,720/5,254)
Urban 1.64 (3.83) 0 0 1.56 33% (1,495/4,508)
Rural 2.31 (5.89) 0 0 1.72 30% (225/746)
Physicians and pharmacists
Overall 3.38 (6.13) 0 1.32 4.08 55% (2,867/5,254)
Urban 3.23 (5.41) 0 1.39 4.05 57% (2,550/4,508)
Rural 4.38 (9.33) 0 0 4.36 42% (317/746)

Abbreviation: SD, standard deviation.

a

Based on analyses of data for 5,254 census tracts (4,508 urban and 746 rural). Census tracts are designated urban areas if they have at least 2,500 people based on the 2010 Census urban and rural classifications.34

b

Means are based on provider rates where outliers were winsorized to 30 or more providers per 3,500 people.