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. 2000 Jun 17;320(7250):1627–1631. doi: 10.1136/bmj.320.7250.1627

Table 1.

Outcomes of offering screening to 5000 diabetic patients in systematic programme and of screening equivalent cohort opportunistically

Outcome Systematic screening Opportunistic screening
True positive 502 346
False positive 481 268
True negative 2955 3082
False negative 62 203
Total number screened 4000 3900