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Table 1 Demographic characteristics of the study population

From: Investigating the sequential patterns of methamphetamine use initiation in Iran

Characteristics Number (n = 302) Percent
Gender Male 286 94.7%
Female 16 5.3%
Age (years) 18–40 187 61.7%
Over 40 115 38.3%
Marital status Single 95 31.5%
Married 140 46.3%
Divorced 60 19.9%
Widow 7 2.3%
Employment Unemployed 75 24.8%
Employed 227 75.2%
Self-employed 183 60.6%
Employee 37 12.2%
Retired 5 1.7%
Student 2 0.7%
Educationa Elementary education 55 18.2%
Secondary education 217 71.9%
Higher education 30 9.9%
Monthly income (Tomans) Low (<  500,000) 148 49%
Middle (500,000-2,000,000) 130 43.1%
High (> 2,000,000) 24 7.9%
Age of onset (years) of substance use Early (<  15) 139 46%
Late (> 15) 163 54%
History of hospitalization No 185 61.3%
Yes; previous psychiatric hospitalization 117 38.7%
Substance use in the family No 69 22.8%
Yes 233 77.2%
One member 98 32.4%
Two members 59 19.5%
Three members 34 11.3%
Four members 18 6%
Five members 12 4%
Six members 5 1.7%
Seven members 7 2.3%
Type of substance use in the family members Stimulant substancesb 47 15.6%
Non-stimulant substances 255 84.4%
Type of substance use in the last yearc Tobacco group 290 96%
Heroin group 216 71.5%
Opium group 150 49.7%
Cannabis group 119 39.4%
Alcohol group 97 32.1%
Cocaine group 16 5.3%
Ritalin group 3 1%
  1. aElementary education including illiterate and elementary education; Secondary education including high school education; and Higher education including diploma and higher education
  2. bStimulant substances including Ritalin, amphetamines and cocaine
  3. cThe tobacco group, including hookah and cigarettes; the heroin group, including heroin and crack; the opium group, including opium and opium sap; the cannabis group, including marijuana and cannabis; the alcohol group, only including alcohol; the cocaine group, only including cocaine; and the Ritalin group, only including Ritalin (methylphenidate)