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Table 1 Comparisons of clinical and personality variables

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

  Control (n = 87) IGD (n = 63) χ 2/t/F P
Age (years old) 28.58 ± 5.812 32.03 ± 6.528  3.398 .001
Male proportion (%) 76 (87.4%) 39 (61.9%) 13.232 .000
Weekday gaming hours 1.66 ± 1.19 2.57 ± 1.40  2.805 .007
Weekend gaming hours 2.88 ± 1.88 3.86 ± 1.90  2.055 .044
BSCS 36.17 ± 6.547 41.44 ± 5.482  5.196 .000
DII 4.16 ± 3.429 6.57 ± 2.988  4.498 .000
Novelty seeking 31.59 ± 8.997 37.54 ± 8.561  2.689 a .009
Harm avoidance 33.104 ± 2.071 33.666 ± 1.642 .044 .834
Reward dependence 42.046 ± 1.355 44.967 ± 1.709 1.760 .189
Persistence 43.05 ± 10.538 49.46 ± 8.659  2.595 a .012
Self-directedness 49.368 ± 1.371 50.727 ± 1.730 .372 .544
Cooperativeness 52.759 ± 1.448 55.534 ± 1.827 1.391 .243
Self-transcendence 18.51 ± 8.775 24.92 ± 10.311  2.725 a .008
  1. IGD Internet gaming disorder, BSCS brief self-control scale, DII Dickman dysfunctional impulsivity scale
  2. p < .05, ** p < .005
  3. aResults of t tests