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Table 6 Optometrists’ sensitivity and specificity for identifying diabetic retinopathy as reported in the current study and previous studies

From: Sensitivity and specificity of Norwegian optometrists’ evaluation of diabetic retinopathy in single-field retinal images – a cross-sectional experimental study

   Sensitivity (95%CI) Specificity (95%CIn
Study Retinal examination method ADR STDR ADR STDR
Our study (2011)      
 Community optometrists Image evaluation of digital images 67 (62 to 72)   84 (80 to 89)  
Harvey et al (2006)      
 Optometrists in a screening program Not available   80 (71 to 89)   99 (98 to 100)
Olson et al (2003)      
 Specially trained optometrists Dilated slit-lamp examination   73 (52 to 88)   90 (87 to 93)
Schmid et al (2002)      
 Community optometrists Ophthalmoscopy (free choice) 92 (84 to 100)   94 (90 to 98)  
  Image evaluation of retinal slides 94 (90 to 98)   97 (92 to 100)  
Hulme et al (2001)      
 Specially trained optometrists Dilated slit-lamp examination 72 87 77 91
Prasad et al (2001)      
 Specially trained optometrists Dilated slit-lamp examination 66 (65 to 67) 76 (70 to 81) 97 (97 to 98) 95 (95 to 96)
Gibbins et al (1998)      
 Community optometrists Image evaluation of 35 mm slides 88 (83 to 93) 91 (79 to 98) 68 (58 to 68) 83 (79 to 87)
 Specially trained optometrist Image evaluation of 35 mm slides 86 (81 to 91) 97 (90 to 100) 89 (85 to 93) 87 (84 to 91)
Buxton et al (1991)      
 Community optometrists Image evaluation of Polaroid images 48 (26 to 69)   94 (92 to 97)  
  1. ADR, any diabetic retinopathy, STDR, sight-threatening diabetic retinopathy.