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Table 3 Association of genotypes with symptoms of IGD in male

From: An association study of Taq1A ANKK1 and C957T and − 141C DRD2 polymorphisms in adults with internet gaming disorder: a pilot study

 

A1+ (n = 73)

A1− (n = 42)

T+ (n = 16)

T− (n = 99)

Del+ (n = 35)

Del− (n = 79)

G1

20 (27.4%)

12 (28.6%)

4 (25.0%)

28 (28.3%)

8 (22.9%)

24 (30.4%)

χ 2 = .018, p = .892

χ 2 = .074, p = .786

χ 2 = .680, p = .410

G2

16 (21.9%)

12 (28.6%)

3 (18.8%)

25 (25.3%)

6 (21.4%)

22 (27.8%)

χ 2 = .641, p = .423

χ 2 = .316, p = .574

χ 2 = 1.500, p = .221

G3

22 (30.1%)

14 (33.3%)

3 (18.8%)

33 (33.3%)

8 (22.9%)

28 (35.4%)

χ 2 = .127, p = .722

χ 2 = 1.362, p = .243

χ 2 = 1.778, p = .182

G4

27 (37.0%)

18 (42.9%)

7 (43.8%)

38 (37.4%)

11 (31.4%)

34 (43.0%)

χ 2 = .386, p = .535

χ 2 = .167, p = .683

χ 2 = 1.368, p = .242

G5

24 (32.9%)

19 (45.2%)

7 (43.8%)

36 (36.4%)

10 (28.6%)

33 (41.8%)

χ 2 = 1.740, p = .187

χ 2 = .321, p = .571

χ 2 = 1.779, p = .180

G6

21 (28.8%)

13 (31.0%)

5 (31.3%)

29 (29.3%)

6 (17.1%)

28 (35.4%)

χ 2 = .061, p = .805

χ 2 = .025, p = .874

χ 2 = 3.881, p = .049*

G7

27 (37.0%)

18 (42.9%)

5 (31.3%)

40 (40.4%)

11 (31.4%)

34 (43.0%)

χ 2 = .386, p = .535

χ 2 = .485, p = .486

χ 2 = .368, p = .242

G8

20 (27.4%)

15 (35.7%)

5 (31.3%)

30 (30.3%)

6 (17.1%)

29 (36.7%)

χ 2 = .871, p = .351

χ 2 = .006, p = .939

χ 2 = 4.364, p = .037*

G9

14 (19.2%)

10 (23.8%)

2 (12.5%)

22 (22.2%)

4 (11.4%)

20 (25.3%)

χ 2 = .346, p = .556

χ 2 = .788, p = .375

χ 2 = 2.815, p = .093

  1. G1–G9 represented DSM-5 IGD criteria (Additional file 2)
  2. p < .05