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Table 3 NET8 (rs5569), CHRNA4 (rs1044396) and CRHR1 (rs28364027) genotypes and allele frequencies between IGA and non-IGA groups

From: Genetic association of human Corticotropin-Releasing Hormone Receptor 1 (CRHR1) with Internet gaming addiction in Korean male adolescents

Gene (SNP)

MAF

Genotype

IGA (n = 116)

Non-IGA (n = 114)

χ21

p1

Allele type

IGA (n = 116)

Non-IGA (n = 114)

χ22

p2

OR (95% CI)

 

n (%)

n (%)

 

n (%)

n (%)

NET8 (rs5569)

0.25

AA

65 (58.6)

70 (50.2)

0.89

.640

A

177 (76.0)

167 (73.2)

0.50

.450

0.78 (0.47–1.32)

 

AG

41 (35.3)

47 (41.3)

 

G

56 (24.0)

61 (26.8)

 

GG

7 (6.1)

7 (6.1)

CHRNA4 (rs1044396)

0.21

CC

68 (58.6)

71 (62.3)

0.59

.730

C

180 (77.6)

180 (78.9)

0.10

.730

1.17 (0.63–1.95)

 

CT

44 (37.9)

38 (33.3)

 

T

52 (22.4)

48 (21.1)

 

TT

4 (3.5)

5 (4.4)

CRHR1 (rs28364027)

0.07

AA

107 (92.2)

93 (81.6)

5.76

.016

A

223 (97.8)

207 (94.7)

5.36

.021

2.63 (1.17–6.15)

 

AG

9 (7.8)

21 (18.4)

 

G

9 (2.2)

21 (5.3)

 

GG

0 (0.0)

0 (0.0)

  1. IGA Internet gaming addiction, non-IGA non-Internet gaming addiction, SNP single nucleotide polymorphism, MAF minor allele frequency; χ21, χ2 in comparison of genotype frequency between IGA and non-IGA; p1, p-value in comparison of genotype frequency between IGA and non-IGA; χ22, χ2 in comparison of allele frequency between IGA and non-IGA; p2, p-value in comparison of allele frequency between IGA and non-IGA; OR, odds ratio; CI, confidence interval