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Medicaid
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Commercial
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Both payer types
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Non-AT group, n = 1,061,823
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AT group, n = 2,332,627
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Non-AT group, n = 1,135,575
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AT group, n = 3,459,175
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Non-AT group, n = 2,151,531
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AT group, n = 5,520,007
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Age in baseline year 2011, mean (standard error) a
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14.5 (0.002)
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14.3 (0.001)
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14.7 (0.002)
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14.4 (0.001)
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14.6 (0.001)
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14.4 (0.001)
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Gender, %
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Female
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46.0%
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46.3%
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46.9%
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47.5%
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46.5%
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47.1%
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Male
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54.0%
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53.7%
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53.1%
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52.5%
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53.5%
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52.9%
|
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Race, %
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White
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64.4%
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59.3%
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16.5%
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11.8%
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38.9%
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30.3%
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Black
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3.8%
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3.9%
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0.8%
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0.9%
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2.23%
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2.1%
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Other
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6.4%
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6.8%
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1.3%
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1.0%
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3.7%
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3.3%
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Unknown
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25.4%
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30.0%
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81.5%
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86.3%
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55.1%
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64.4%
|
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Ethnicity, %
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Hispanic
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9.1%
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12.5%
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1.3%
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1.2%
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5.1%
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5.7%
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Not Hispanic
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56.2%
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52.0%
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7.9%
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6.3%
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30.6%
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24.1%
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Unknown
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34.7%
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35.5%
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90.8%
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92.5%
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64.3%
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70.2%
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Residence areas defined by RUCA codes b, %
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Urban area
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86.3%
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96.3%
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89.4%
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95.6%
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88.0%
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99.1%
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Rural area
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13.4%
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0.9%
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10.2%
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0.9%
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11.7%
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0.9%
|
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Not defined
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0.3%
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2.8%
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0.4%
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3.4%
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0.3%
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0.0%
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- aStandard errors were estimated based on bootstrap of 50 replications clustered by sample. bResidence areas were defined by the Rural-Urban Commuting Area (RUCA) criteria (University of Washington n.d.)
- Abbreviation: AT Athletic trainer
