Diabetes mellitus has been identified as a possible risk factor for ta
rdive dyskinesia. The authors examined 160 elderly individuals who wer
e beginning neuroleptic treatment; 24 had diabetes and 136 did not. Af
ter 43 weeks of neuroleptic exposure, the cumulative incidence rates o
f tardive dyskinesia were 54.1% (SE=5.6%) for the diabetics and 25.6%
(SE=16.1%) for the nondiabetics.