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Table 5 Relationship between drug sequences and family history of substance use

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

Sequencing patterns Family members with substance use Family members with no substance use chi-square *P-value OR
N (%) N (%) N (%)
C 13 (68.42) 6 (31.58) 0.92 0.24 1.14
D 17 (70.83) 7 (29.17) 0.75 0.26 1.109
E 14 (82.35) 3 (17.65) 0.22 0.45 0.94
F 19 (95) 1 (5) 3.81 0.03 0.8
  1. C (sequencing C): tobacco-opium-MA; D (sequencing D), tobacco-opium-heroin-MA; E (sequencing E): tobacco-alcohol-opium-heroin-MA; and F (sequencing F), tobacco-alcohol-cannabis-opium-heroin-MA.
  2. MA methamphetamine
  3. OR odds ratio
  4. * The chi-square test was used for the statistical differences