Table 1.
Demographic characteristics of methadone maintenance patients
| Demographic characteristics | Number | % | Non-relapse n (%) |
Relapse n (%) |
p value |
|---|---|---|---|---|---|
| Age | |||||
| < 40 | 254 | 38.8 | 212 (83.5%) | 42 (16.5%) | 0.080 |
| 40–50 | 265 | 40.5 | 233 (87.9%) | 32 (12.1%) | |
| > 50 | 136 | 20.8 | 124 (91.2%) | 12 (8.8%) | |
| Sex | |||||
| Male | 645 | 98.5 | 561 (87.0) | 84 (13.0) | 0.628 |
| Female | 10 | 1.5 | 8 (80.0) | 2 (20.0) | |
| Highest level of education | |||||
| Primary school or lower | 90 | 13.7 | 80 (88.9%) | 10 (11.1%) | 0.618 |
| Secondary school | 272 | 41.5 | 231 (84.9%) | 41 (15.1%) | |
| High school | 234 | 35.7 | 205 (87.6%) | 29 (12.4%) | |
| College, university, or higher | 59 | 9.0 | 53 (89.8%) | 6 (10.2%) | |
| Area | |||||
| Metropolitan | 237 | 36.2 | 225 (94.9%) | 12 (5.1%) | < 0.001 |
| Mountainous | 418 | 63.8 | 344 (82.3%) | 74 (17.7%) | |
| Occupation | |||||
| Not working | 164 | 25.0 | 146 (89.0%) | 18 (11.0%) | 0.013 |
| Farmer | 150 | 22.9 | 123 (82.0%) | 27 (18.0%) | |
| Freelancer | 202 | 30.8 | 169 (83.7%) | 33 (16.3%) | |
| Trader | 46 | 7.0 | 42 (91.3%) | 4 (8.7%) | |
| Other occupations | 93 | 14.2 | 89 (95.7%) | 4 (4.3%) | |
| Occupation type | |||||
| Not working | 164 | 25.0 | 146 (89.0%) | 18 (11.0%) | 0.129 |
| Seasonal or part-time | 307 | 46.9 | 258 (84.0%) | 49 (16.0%) | |
| Full-time | 184 | 28.1 | 165 (89.7%) | 19 (10.3%) | |
| Patient’s monthly income (million Vietnam dongs) | |||||
| < 1 | 187 | 28.5 | 166 (88.8%) | 21 (11.2%) | 0.303 |
| 1–3 | 248 | 37.9 | 209 (84.3%) | 39 (15.7%) | |
| > 3 | 220 | 33.6 | 194 (88.2%) | 26 (11.8%) | |
| Family’s monthly income (million Vietnam dongs) | |||||
| < 4 | 143 | 21.8 | 121 (84.6%) | 22 (15.4%) | 0.012 |
| 4–7 | 290 | 44.3 | 243 (83.8%) | 47 (16.2%) | |
| > 7 | 222 | 33.9 | 205 (92.3%) | 17 (7.7%) | |
| Number of family members living with the patient | |||||
| Living alone | 38 | 5.8 | 33 (86.8%) | 5 (13.2%) | 0.003 |
| 1–2 | 322 | 49.2 | 269 (83.5%) | 53 (16.5%) | |
| 3–4 | 248 | 37.9 | 220 (88.7%) | 28 (11.3%) | |
| 5 and higher | 47 | 7.2 | 47 (100%) | 0 (0.0%) | |
| Number of close friends/relatives | |||||
| None | 24 | 3.7 | 19 (79.2%) | 5 (20.8%) | < 0.001 |
| 1–2 | 262 | 40.0 | 210 (80.2%) | 52 (19.8%) | |
| 3–4 | 190 | 29.0 | 171 (90.0%) | 19 (10.0%) | |
| 5 and higher | 179 | 27.3 | 169 (94.4%) | 10 (5.6%) | |
| Social support score | |||||
| 0 to < 25 | 62 | 9.5 | 50 (80.6%) | 12 (19.4%) | 0.040 |
| 25 to < 50 | 109 | 16.6 | 88 (80.7%) | 21 (19.3%) | |
| 50 to < 75 | 257 | 39.2 | 226 (87.9%) | 31 (12.1%) | |
| 75 to 100 | 227 | 34.7 | 205 (90.3%) | 22 (9.7%) | |
Exchange rate: 1 million Vietnam dongs (VND) = 42.373 US dollars