| First Author Year | Design, Sample size,ā Country | Prevalence of Clinical Hypothyroidism | Risk factors Identified if any | Remarks |
| Al-Geffari et al, 2013 [12] | Retrospective, 411, Saudi Arabia | 15.3% | F gender, duration of diabetes > 10 year | Nil | Diez, 2011. [13] | Cross Sectional, 318, Spain | 3.5% ( overt hypothyroidism) 3.1 ( sub clinical) | Nil | No relation with duration of DM | Palma, 2013 [14] | Cross Sectional, 386, Brazil | 0.7% (12.7 subclinical) | Nil | Nil | Demitrost, 2012 [15] | Retrospective, 202, Manipur, India | 27.7 | Age, BMI > 25 | Nil | Kumar RA 2017 [16] | Retrospective, 400, Bangalore India | 12% | Nil | Nil | Akbar, 2006 [17] | Case control, 100 diabetic patients with 100 controls, Saudi Arabia | 16% (thyroid dysfunction) | Nil | Nil | Perros, 1995 [18] | Cross sectional, 1315 | 6.9% (Thyroid dysfunction in T2D) | Nil | Nil | Celani, 1994 [19] | Cross sectional, 290, | 7.25% | Nil | Nil | Fleiner, 2016 [20] | Prospective, 1452, Norway | ā | Nil | No significant relationship with T2DM |
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