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Table 1 Clinical characteristics of participants (mean ± S.D.)

From: Regional homogeneity changes between heroin relapse and non-relapse patients under methadone maintenance treatment: a resting-state fMRI study

Characteristics Non-relapse (N =19) Relapse (N = 21) T-value p-value
Age (years) 39.3 ± 7.1 35.6 ± 5.4 1.74 0.09
Education level (years) 9.1 ± 2.6 9.5 ± 2.2 −0.49 0.62
Cigarettes (per day) 21 ± 8.5 21.3 ± 10.1 −0.12 0.90
Duration of cigarette smoking (months) 275.7 ± 69.1 224 ± 64.5 2.29 0.30
Daily dosage of heroin abuse (g) 0.3 ± 0.2 0.3 ± 0.1 0.16 0.87
Accumulated dosage of heroin abuse (g) 1036.8 ± 1232.2 918.8 ± 1186.9 0.28 0.77
Duration of heroin abuse (months) 275.7 ± 69.1 224 ± 64.5 0.49 0.62
Accumulated dosage of methadone use (l) 41.6 ± 34.9 30.6 ± 17.4 1.16 0.25
Daily dosage of methadone use (ml) 44.1 ± 19.5 43.5 ± 11.8 0.11 0.91
  1. Note: Unless otherwise indicated, data are means ± standard deviations (S.D.)