Background
Participants and methods
Participants
Methods
Interventions
Statistical analysis
Results
Total | Smokers | Non-smokers | p* | |
---|---|---|---|---|
N
| 447 | 221 | 222 | |
Age (years, mean value) Range: 21–82 years | 45.5 | 43.2 | 47.8 | <0.001 |
Sex (%) | 0.04 | |||
Male | 86.4 | 88.2 | 84.2 | 2 |
Female | 11.2 | 8.1 | 14.4 | |
Missing | 2.5 | 3.6 | 1.4 | |
Sexual orientation (%) | 0.445 | |||
Homosexual | 66.2 | 69.7 | 62.6 | |
Bisexual | 6.7 | 5.4 | 26.1 | |
Heterosexual | 23.9 | 22.2 | 7.7 | |
Missing | 3.1 | 2.7 | 3.6 | |
Educational level (%) | 0.096 | |||
Primary | 13.2 | 15.4 | 11.3 | |
Secondary | 56.4 | 59.3 | 54.5 | |
Tertiary | 25.5 | 19.9 | 29.7 | |
Missing | 4.9 | 5.4 | 4.5 | |
Relationship status (%) | 0.062 | |||
In a relationship | 56.0 | 55.7 | 56.3 | |
Not in a relationship | 36.8 | 39.8 | 33.8 | |
Missing | 7.2 | 4.5 | 9.9 | |
CDC stage (%) | 0.627 | |||
A | 85.3 | 56.6 | 56.8 | |
B | 22.6 | 24.9 | 20.3 | |
C | 19.0 | 17.2 | 21.2 | |
Missing | 1.6 | 1.4 | 1.8 | |
Antiretroviral therapy (Yes, %) | 85.3 | 82.2 | 88.0 | 0.104 |
Antidepressant therapy (Yes, %) | 16.0 | 14.0 | 18.0 | 0.321 |
IV-drug use (Yes, %) | 4.1 | 6.9 | 1.4 | 0.004 |
Cardiovascular disease (Yes, %) | 12.4 | 10.2 | 14.7 | 0.161 |
Tumours (Yes, %) | 3.8 | 3.2 | 4.6 | 0.470 |
Smoking status of the chosen physician (Yes, %) | 0.478 | |||
Physician smokes | 6.5 | 7.7 | 5.4 | |
Physician does not smoke | 36.0 | 37.6 | 34.2 | |
Do not know | 55.0 | 52.0 | 58.6 | |
Missing | 2.5 | 2.7 | 1.8 | |
Smoking status of the partnera (Yes, %) | <0.001 | |||
Smokes daily | 39.4 | 58.5 | 20.8 | |
Smokes sometimes | 14.3 | 16.3 | 12.0 | |
Does not smoke | 45.4 | 24.4 | 67.2 | |
Missing | 0.8 | 0.8 | 0.0 | |
Number of cigarettes smoked daily (%) | n.a. | |||
Up to 10 | 24.0 | |||
11–20 | 37.1 | |||
21–30 | 22.2 | |||
31 and more | 13.1 | |||
Missing | 3.6 |
Domain | N
| Mean | SD | CI | p
|
---|---|---|---|---|---|
Physical well-being | 0.001 | ||||
Non-smoker | 216 | 16.07 | 2.68 | 15.71–16.43 | |
Up to 10 | 53 | 15.58 | 2.83 | 14.80–16.36 | |
11–20 | 84 | 15.79 | 2.66 | 15.21–16.37 | |
21–30 | 50 | 15.36 | 3.71 | 14.30–16.41 | |
More than 31 | 29 | 13.75 | 2.92 | 12.63–14.86 | |
Psychological well-being | 0.002 | ||||
Non-smoker | 216 | 15.29 | 2.71 | 14.93–15.66 | |
Up to 10 | 53 | 14.92 | 3.27 | 14.01–15.82 | |
11–20 | 84 | 15.16 | 2.29 | 14.66–15.66 | |
21–30 | 50 | 14.24 | 3.01 | 13.38–15.10 | |
More than 31 | 29 | 13.26 | 2.99 | 12.12–14.40 | |
Level of independence | 0.002 | ||||
Non-smoker | 216 | 16.10 | 2.93 | 15.71–16.49 | |
Up to 10 | 53 | 15.81 | 3.81 | 14.75–16.86 | |
11–20 | 84 | 15.67 | 2.79 | 15.06–16.27 | |
21–30 | 50 | 14.62 | 3.50 | 13.62–15.61 | |
More than 31 | 29 | 14.07 | 3.51 | 12.73–15.41 | |
Social relationships | 0.486 | ||||
Non-smoker | 216 | 15.44 | 2.95 | 15.04–16.39 | |
Up to 10 | 53 | 15.58 | 2.93 | 14.77–16.39 | |
11–20 | 84 | 15.22 | 2.72 | 14.63–15.81 | |
21–30 | 50 | 15.11 | 3.72 | 14.05–16.17 | |
More than 31 | 29 | 14.43 | 3.73 | 13.01–15.85 | |
Environment | 0.053 | ||||
Non-smoker | 216 | 16.51 | 2.30 | 16.20–16.82 | |
Up to 10 | 53 | 15.96 | 2.72 | 15.21–16.71 | |
11–20 | 84 | 16.27 | 1.94 | 15.85–16.69 | |
21–30 | 50 | 15.92 | 1.95 | 15.36–16.47 | |
More than 31 | 29 | 15.29 | 3.21 | 14.07–06.52 | |
Spirituality | 0.580 | ||||
Non-smoker | 216 | 15.61 | 3.06 | 15.20–16.02 | |
Up to 10 | 53 | 15.86 | 3.40 | 14.92–16.80 | |
11–20 | 84 | 15.80 | 3.58 | 15.02–16.58 | |
21–30 | 50 | 15.26 | 3.47 | 14.27–16.25 | |
More than 31 | 29 | 14.78 | 4.09 | 13.22–16.33 |
Quality of life domains | Smokers baseline (N = 221) | Non-smokers baseline (N = 221) | p* | Smokers study end (N = 197) | Non-smokers study end (N = 199) | p* |
---|---|---|---|---|---|---|
Physical | 15.35 (3.03) | 16.06 (2.68) | 0.009 | 15.47 (2.96) | 15.78 (2.93) | 0.293 |
Psychological | 14.66 (2.89) | 15.28 (2.72) | 0.021 | 14.79 (2.82) | 14.67 (3.10) | 0.687 |
Independence | 15.19 (3.42) | 16.09 (2.95) | 0.003 | 15.28 (3.66) | 15.48 (3.39) | 0.587 |
Social | 15.17 (3.16) | 15.46 (2.93) | 0.324 | 15.48 (3.11) | 15.19 (3.27) | 0.367 |
Environment | 16.01 (2.34) | 16.48 (2.32) | 0.036 | 16.12 (2.36) | 15.86 (2.77) | 0.330 |
Spirituality | 15.58 (3.56) | 15.64 (3.07) | 0.854 | 15.47 (3.41) | 15.08 (3.51) | 0.261 |
Quality of life domains | Smokers | Non-smokers | Quitters | ||||||
---|---|---|---|---|---|---|---|---|---|
Base line | Study end | p* | Base line | Study end | p* | Base line | Study end | p* | |
Physical | 15.42 (2.92) | 15.47 (2.96) | 0.778 | 16.09 (2.67) | 15.80 (2.92) | 0.052 | 16.03 (2.47) | 15.59 (2.76) | 0.459 |
Psychological | 14.75 (2.77) | 14.79 (2.83) | 0.816 | 15.31 (2.65) | 14.68 (3.10) | <0.001 | 15.48 (3.01) | 14.99 (2.81) | 0.403 |
Independence | 15.34 (3.45) | 15.38 (3.67) | 0.804 | 16.08 (2.92) | 15.49 (3.39) | 0.001 | 15.96 (4.12) | 15.33 (3.68) | 0.443 |
Social | 15.17 (3.19) | 15.48 (3.11) | 0.093 | 15.44 (2.82) | 15.21 (3.27) | 0.230 | 15.05 (3.84) | 15.30 (3.28) | 0.587 |
Environment | 16.08 (2.32) | 16.12 (2.36) | 0.794 | 16.56 (2.21) | 15.87 (2.78) | <0.001 | 16.91 (2.20) | 16.67 (2.29) | 0.616 |
Spirituality | 15.61 (3.61) | 15.47 (3.41) | 0.538 | 15.65 (3.12) | 15.09 (3.52) | 0.010 | 15.47 (3.33) | 14.44 (3.67) | 0.134 |