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TABLE 3

Incidence of Meningococcal Disease by Serogroup in Persons Aged 18–24 Years and RR by College Student Status in the United States From 2014 to 2016

Age GroupAll CasesSerogroup BSerogroups C, W, or Y
Total CasesAverage Annual IncidenceaRR (95% CI)Total CasesAverage Annual IncidenceaRR (95% CI)Total CasesAverage Annual IncidenceaRR (95% CI)
All 18- to 24-year-olds 163 0.1741  88 0.0940  39 0.0416  
 College student 83 0.2315 1.67 (1.23–2.27) 60 0.1673 3.54 (2.21–5.41) 10 0.0279 0.56 (0.27–1.14) 
 Noncollege student 80 0.1384  28 0.0485  29 0.0502  
18- to 19-year-olds 73 0.2871  48 0.1888  0.0315  
 College student 50 0.3777 2.00 (1.22–3.28) 37 0.2795 3.10 (1.58–6.07) 0.0453 2.76 (0.56–13.78) 
 Noncollege student 23 0.1888  11 0.0903  0.0164  
20- to 21-year-olds 52 0.1965  28 0.1058  10 0.0378  
 College student 29 0.2333 1.42 (0.82–2.46) 22 0.1770 4.14 (1.68–10.20) 0.0241 0.48 (0.13–1.87) 
 Noncollege student 23 0.1639  0.0428 0.0499  
22- to 24-year-olds 38 0.0910  12 0.0287  21 0.0503  
 College student 0.0393 0.36 (0.13–1.03) 0.0098 0.28 (0.04–2.18) 0.0098 0.16 (0.02–1.15) 
 Noncollege student 34 0.1077  11 0.0348  20 0.0634  
Age GroupAll CasesSerogroup BSerogroups C, W, or Y
Total CasesAverage Annual IncidenceaRR (95% CI)Total CasesAverage Annual IncidenceaRR (95% CI)Total CasesAverage Annual IncidenceaRR (95% CI)
All 18- to 24-year-olds 163 0.1741  88 0.0940  39 0.0416  
 College student 83 0.2315 1.67 (1.23–2.27) 60 0.1673 3.54 (2.21–5.41) 10 0.0279 0.56 (0.27–1.14) 
 Noncollege student 80 0.1384  28 0.0485  29 0.0502  
18- to 19-year-olds 73 0.2871  48 0.1888  0.0315  
 College student 50 0.3777 2.00 (1.22–3.28) 37 0.2795 3.10 (1.58–6.07) 0.0453 2.76 (0.56–13.78) 
 Noncollege student 23 0.1888  11 0.0903  0.0164  
20- to 21-year-olds 52 0.1965  28 0.1058  10 0.0378  
 College student 29 0.2333 1.42 (0.82–2.46) 22 0.1770 4.14 (1.68–10.20) 0.0241 0.48 (0.13–1.87) 
 Noncollege student 23 0.1639  0.0428 0.0499  
22- to 24-year-olds 38 0.0910  12 0.0287  21 0.0503  
 College student 0.0393 0.36 (0.13–1.03) 0.0098 0.28 (0.04–2.18) 0.0098 0.16 (0.02–1.15) 
 Noncollege student 34 0.1077  11 0.0348  20 0.0634  
a

Cases per 100 000 population.

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