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Table 1 Association and pathway studies of drug addiction

From: Association of OPRM1 with addiction: a review on drug, alcohol and smoking addiction in worldwide population

S No Population/ethnicity Addiction-dependent cases Controls Genes Reference
  OD/HD CD MD AmD   OPRM1 OPRK1 OPRD1  
1 Swedish 139     170    [10]
2 Asian 473        [6]
3 Asian 87     82    [11]
4 African Americans 336 503       [12]
5 European Americans 1007 336      
6 Caucasian     162     [13]
7 Asian (Manipur, India) 132     147    [14]
8 Mix (7) 79 202    116    [15]
9 African Americans 33 125    51    [16]
10 Asian (Japanese)     128 232    [17]
11 European Americans 412     184 [18]
12 African Americans 202     167 [19]
13 Pakistan 100     100    [20]
14 European Americans 83     832 [21]
15 European Americans 91 171    338    [22]
16 European Americans 111 225    443   [23]
17 European Americans 21        [24]
18 Caucasian 56     83    [25]
19 Caucasian 236     84    [26]
  African Americans 74     34   
20 Asian (China) 145     48    [27]
21 Iran 100     100 [28]
22 Han Chinese (Taiwanese) 72      [29]
23 European Americans    117   76    [30]
24 Malaysians Malays 459     543    [31]
  1. The table depicts the association and pathway studies of drug addiction cases and dependent cases which have been analysed for OPRM1, OPRK1 and OPRD1 genes studies from different countries