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Table 3 —

Unadjusted prevalence of depression in controlled and uncontrolled studies and subsets thereof

Grouping of studiesControlled studies
Diabetic subjects: uncontrolled studiesDiabetic subjects: controlled + uncontrolled studies
Nondiabetic subjectsDiabetic subjects
All studies 11.4 (18) 20.5 (18)* 29.7 (21) 25.3 (39) 
 Type 1 8.6 (3) 21.7 (3)* 21.2 (10) 21.3 (13) 
 Type 2 6.4 (7) 16.5 (7)* 33.8 (8) 27.0 (15) 
 Male 9.3 (7) 15.0 (7)* 20.7 (8) 18.0 (15) 
 Female 16.3 (7) 24.3 (7)* 33.0 (8) 28.2 (15) 
 Community 12.7 (11) 19.0 (11)* 39.7 (1) 20.1 (12) 
 Clinic 15.1 (7) 26.7 (7)* 32.7 (19) 31.7 (26) 
 Diagnostic interview 5.0 (7) 9.0 (7)* 14.2 (7) 11.4 (14) 
 Self-report 14.4 (11) 26.1 (11)* 34.9 (14) 31.0 (25) 
Grouping of studiesControlled studies
Diabetic subjects: uncontrolled studiesDiabetic subjects: controlled + uncontrolled studies
Nondiabetic subjectsDiabetic subjects
All studies 11.4 (18) 20.5 (18)* 29.7 (21) 25.3 (39) 
 Type 1 8.6 (3) 21.7 (3)* 21.2 (10) 21.3 (13) 
 Type 2 6.4 (7) 16.5 (7)* 33.8 (8) 27.0 (15) 
 Male 9.3 (7) 15.0 (7)* 20.7 (8) 18.0 (15) 
 Female 16.3 (7) 24.3 (7)* 33.0 (8) 28.2 (15) 
 Community 12.7 (11) 19.0 (11)* 39.7 (1) 20.1 (12) 
 Clinic 15.1 (7) 26.7 (7)* 32.7 (19) 31.7 (26) 
 Diagnostic interview 5.0 (7) 9.0 (7)* 14.2 (7) 11.4 (14) 
 Self-report 14.4 (11) 26.1 (11)* 34.9 (14) 31.0 (25) 

Data are % (n); n indicates number of studies used in the calculation.

*

The prevalence of depression was greater in diabetic subjects compared with nondiabetic control subjects (P < .001);

the prevalence of depression in diabetic individuals was greater in uncontrolled studies compared with controlled studies (P < 0.05).

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