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Table 2 Comparison of most common underlying conditions in the methadone and opium groups

From: Drug-induced prolonged corrected QT interval in patients with methadone and opium overdose

Underlying disease

Frequency (percent) in methadone group

Frequency (percent) in opium group

Total frequency (percent)

Hypertension

14 (14.4%)

25 (18.2%)

39 (17%)

Diabetes

7 (7.2%)

21 (15.4%)

28 (12%)

Hyperlipidemia

6 (6.2%)

8 (5.8%)

14 (6%)

Ischemic heart disease

7 (7.2%)

10 (7.3%)

17 (7%)

No underlying disease

63 (65%)

73 (53.3%)

136 (58%)

Total

97 (100%)

137 (100%)

234 (100%)