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Table 2 Demographic and streptococcal group distributions, by sore throat and carriage in slum versus non-slum children

From: Factors associated with Group A Streptococcus emm type diversification in a large urban setting in Brazil: a cross-sectional study

  Non-slum (n = 915) a   Slum (n = 1266) b  
  Case (%)c Control (%)c p-value Case (%) Control (%) p-value
  287 (31.4) 628 (68.6)   337 (26.6) 929 (73.4)  
Mean Age (95% CI) 7.8 (7.3-8.2) 7.9 (7.6-8.1) 0.67 7.2 (6.8-7.5) 7.3 (7.1-7.5) 0.57
   Male 139 (48.4) 335 (53.3) 0.17 146 (43.3) 508 (54.7) <.001
Monthly Salary N = 274 N = 594 0.02 N = 312 N = 882 .75
415 11 (4.0) 26 (4.4)   178 (57.1) 468 (53.1)  
416-830 38 (13.9) 123 (20.7)   91 (29.2) 291 (33.0)  
831-1660 58 (21.2) 145 (24.4)   34 (10.9) 96 (10.9)  
1661-2490 55 (20.1) 117 (19.7)   5 (1.6) 17 (1.9)  
2491 112 (40.9) 183 (30.8)   4 (1.3) 10 (1.1)  
Mean # persons per household (95% CI) 4.0 (3.9-4.2) 4.0 (3.9-4.1) 0.96 4.5 (4.3-4.8) 4.4 (4.3-4.5) 0.27
Mean # < 15 yrs. per household (95% CI) 1.5 (1.5-1.6) 1.6 (1.6-1.7) 0.16 2.1 (2.0-2.3) 2.0 (1.9-2.1) 0.06
   Group A 50 (17.4) 49 (7.8) <.001 78 (23.1) 76 (8.2) <.001
   Group B 7 (2.4) 17 (2.7) 0.81 4 (1.1) 6 (0.6) 0.34
   Group C 8 (2.8) 22 (3.5) 0.57 6 (1.8) 21 (2.3) 0.60
   Group F 6 (2.1) 18 (2.9) 0.50 7 (2.1) 20 (2.2) 0.93
   Group G 8 (2.8) 38 (6.1) 0.04 17 (5.0) 70 (7.5) 0.12
   No isolate 208 (72.5) 475 (75.6) 0.17 225 (66.8) 736 (79.2) <.001
  1. a Includes all patients from Clinic C. Case/control status missing for 2 study participants
  2. b Includes all patients from Clinics A and B. Case/control status missing for 11 study participants
  3. c Case = sore throat; control = carriage