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Table 3 Levels of mental distress and life quality scores at baseline and follow-ups, and drop-out rate at 6 month follow-up

From: Smoking among inpatients in treatment for substance use disorders: prevalence and effect on mental health and quality of life

   Non-smoker Smoker p-value
HSCL-10
 Baseline (n = 97) Median (IQRa) 1.8 (1.4–2.2) 2.1 (1.5–2.6) 0.044b
 6 weeks (n = 73) Median (IQRa) 1.6 (1.3–2.3) 1.9 (1.4–2.3) 0.680b
 6 months (n = 45) Median (IQRa) 1.6 (1.4–1.7) 1.8 (1.5–2.1) 0.253b
QoL
 Baseline (n = 97) Median (IQRa) 63 (53–70) 53 (43–63) 0.062b
 6 weeks (n = 73) Median (IQRa) 63 (50–70) 63 (53–70) 0.802b
 6 months (n = 45) Median (IQRa) 70 (67–77) 63 (53–70) 0.037b
Treatment drop-out
 6 weeks (n = 125) n (%) 3 (10) 10 (11) 0.934c
 6 months (n = 125) n (%) 4 (13) 35 (37) 0.015c
  1. HSCL-10 Hopkins Symptoms Check-list 10, QoL Quality of Life questionnaire
  2. aInter-quartile percentiles (25 and 75%). bMann-Whitney U tests. cChi-square test statistics