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Table 3 Effects of social support on health-related quality of life (multiple linear regression analysisa; N = 1212)

From: Relationships between received and perceived social support and health-related quality of life among patients receiving methadone maintenance treatment in Mainland China

Independent variable

SF-36v2PCS

SF-36v2MCS

QOL-DAv2.0

B (95%CI)

P

B (95%CI)

P

B (95%CI)

P

Received social support

 Social network support

  Good family relationship (yes vs. no)

−1.80 (−2.77, −0.84)

<0.001

−3.87 (−5.19, −2.55)

<0.001

−9.22 (−11.22, −7.22)

<0.001

  Usually communicating with others (yes vs. no)

−1.00 (−1.94, −0.06)

0.038

−2.79 (−4.08, −1.49)

<0.001

−4.19 (−6.15, −2.23)

<0.001

  Family/friends supporting MMT (yes vs. no)

0.44 (−0.80, 1.68)

0.49

0.53 (−1.17, 2.22)

0.55

1.27 (−1.30, 3.84)

0.33

 Professional support services

  Convenient service time (yes vs. no)

−2.17 (−3.44, −0.91)

0.001

−2.20 (−3.94, −0.47)

0.013

−4.44 (−7.07, −1.81)

0.001

  Good service attitude (yes vs. no)

−1.11 (−2.42, 0.20)

0.10

0.42 (−1.38, 2.22)

0.65

−0.97 (−3.69, 1.76)

0.49

  Usually receiving health counseling (yes vs. no)

0.27 (−0.81, 1.35)

0.63

−0.56 (−2.05, 0.92)

0.46

0.47 (−1.78, 2.71)

0.68

  Usually receiving psychological counseling (yes vs. no)

−0.05 (−0.99, 0.89)

0.92

−0.35 (−1.64, 0.95)

0.87

−1.07 (−3.02, 0.89)

0.28

  Appropriate treatment charge (yes vs. no)

−1.22 (−2.10, −0.33)

0.007

−1.92 (−3.13, −0.70)

0.002

−2.70 (−4.53, −0.87)

0.004

 Perceived social support

  Good perceived social support (yes vs. no)

−1.47 (−2.35, −0.59)

0.001

−4.23 (−5.44, −3.02)

<0.001

−7.09 (−8.91, −5.26)

<0.001

  1. aMultiple linear regression analysis was performed after controlling for the following dummy variables: gender (ref. male), education level (ref. primary and below), marital status (ref. married), having children (ref, yes), employment status (ref. unemployed), average monthly income over the past year (Chinese yuan, ref. <1000), stable income sources (ref. yes), living with family (ref. yes), chronic disease (ref. yes), and drug use over the past month (ref. yes), as well as the continuous characteristics (age, initial drug use age, days of receiving MMT, and average daily methadone dose)
  2. SF-36v2 Short-Form 36 Health Survey Version 2
  3. PCS physical component summary
  4. MCS mental component summary
  5. QOL-DAv2.0 Quality of Life Scale for Drug Addicts
  6. MMT methadone maintenance treatment
  7. 95% CI 95% confidence interval