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Table 2 Comparison of mean Mal-IIEF-15 domain scores, SDI-2-BM, total testosterone and prolactin in patients with sexual partners in the MMT and BMT groups

From: A comparison of sexual desire in opiate-dependent men receiving methadone and buprenorphine maintenance treatment

  MMT (n = 95) BMT (n = 31) Mean differencea p valueb
mean ± SD mean ± SD
Mal-IIEF-15 domain
 Erectile function 21.09 ± 7.91 23.33 ± 7.71 − 2.23 0.23
 Orgasmic functionc 7.21 ± 4.97 7.15 ± 2.93 0.06 0.96
 Sexual desire 6.14 ± 1.76 7.59 ± 1.54 − 1.46 0.001**
 Intercourse satisfaction 8.59 ± 3.67 9.60 ± 3.54 − 1.01 0.25
 Overall satisfaction 7.09 ± 2.31 7.93 ± 2.14 − 0.11 0.84
Total 48.87 ± 17.10 59.60 ± 15.97 − 4.75 0.23
DSD 27.74 ± 10.95 33.39 ± 11.18 − 5.66 0.04*
SSD 5.25 ± 5.00 4.15 ± 3.74 1.09 0.37
Total testosterone (nmol/L) 12.46 ± 7.64 18.45 ± 9.40 − 5.99 0.005**
Total testosterone (ng/dL) 359.37 ± 220.35 532.13 ± 271.11   
Prolactin (μIU/mL) 162.12 ± 102.69 165.20 ± 67.71 − 2.77 0.91
  1. BMT, buprenorphine maintenance treatment, MMT, methadone maintenance treatment; Mal-IIEF-15, Malay version of the International Index of Erectile Function 15; SDI-2-BM, Malay version of the Sexual Desire Inventory-2; DSD, dyadic sexual desire; SSD, solitary sexual desire; SD, standard deviation, nmol/L, nanomoles per liter; ng/dL, nanograms per decilitre; μIU/mL, macro international units per milliliter
  2. p < 0.05, ** p < 0.01
  3. aAdjusted mean difference with education Level, hepatitis C status, total Malay version of self-rated Montgomery-Asberg Depression Rating Scale (MADRS-BM) score, social functioning total score, health total score and Q score for tobacco as covariates
  4. bAdjusted for multiple comparisons using Bonferroni correction
  5. cA generalized linear model approach was used because the variables were not normally distributed