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Table 1—

Prevalence of diagnosed diabetes, undiagnosed diabetes, and NNTS according to 1985 WHO criteria and 1997 ADA criteria, stratified by race and sex

Total (n = 2,950)White (n = 1,732)
Black (n = 1,218)
Men (n = 913)Women (n = 819)Men (n = 528)Women (n = 690)
Diagnosed diabetes 460 (15.6) 127 (13.9) 64 (7.8) 120 (22.7) 149 (21.6) 
1985 WHO criteria      
 Undiagnosed diabetes 235 (8.0) 83 (9.1) 61 (7.4) 48 (9.1) 43 (6.2) 
 Total diabetes prevalence* 695 (23.6) 210 (23.0) 125 (15.3) 168 (31.8) 192 (27.6) 
 NNTS§ 10.6 9.5 12.4 8.5 12.6 
1997 ADA criteria      
 Undiagnosed diabetes 106 (3.6) 47 (5.1) 12 (1.5) 28 (5.3) 19 (2.8) 
 Total diabetes prevalence* 566 (19.2) 174 (19.1) 76 (9.3) 148 (28.0) 168 (24.3) 
 NNTS 23.5 16.7 62.9 14.6 28.5 
Total (n = 2,950)White (n = 1,732)
Black (n = 1,218)
Men (n = 913)Women (n = 819)Men (n = 528)Women (n = 690)
Diagnosed diabetes 460 (15.6) 127 (13.9) 64 (7.8) 120 (22.7) 149 (21.6) 
1985 WHO criteria      
 Undiagnosed diabetes 235 (8.0) 83 (9.1) 61 (7.4) 48 (9.1) 43 (6.2) 
 Total diabetes prevalence* 695 (23.6) 210 (23.0) 125 (15.3) 168 (31.8) 192 (27.6) 
 NNTS§ 10.6 9.5 12.4 8.5 12.6 
1997 ADA criteria      
 Undiagnosed diabetes 106 (3.6) 47 (5.1) 12 (1.5) 28 (5.3) 19 (2.8) 
 Total diabetes prevalence* 566 (19.2) 174 (19.1) 76 (9.3) 148 (28.0) 168 (24.3) 
 NNTS 23.5 16.7 62.9 14.6 28.5 

Data are n (%).

*

Undiagnosed plus diagnosed diabetes;

participants who reported prior diagnosis by a physician;

participants who met diabetes criteria but responded “no” to the question “Has a doctor ever told you that you have diabetes?”;

§

NNTS smaller in all subgroups compared with ADA criteria;

P < 0.05 versus white and black women;

P < 0.05 versus white women.

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