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Table 1 Demographic characteristics and behavioral information for IGD and HC groups

From: Decreased functional connectivity between ventral tegmental area and nucleus accumbens in Internet gaming disorder: evidence from resting state functional magnetic resonance imaging

  IGD (n = 35) HC (n = 24) t/Mann–Whitney U/χ2
Age 22.46 ± 2.21 23.13 ± 2.09 −1.16
CIAS 76.23 ± 7.67 45.79 ± 9.61 13.51***
Time spent on Internet gaming 23.77 ± 12.01 1.07 ± 0.45n −6.58 a,***
Craving 30.83 ± 7.48 13.42 ± 6.82 9.10***
Anxiety 5.40 ± 4.88 3.04 ± 3.16 4.15*
Depression 7.67 ± 5.65 2.96 ± 2.99 2.25***
Alcohol use 28 18 0.21b
Smoking 5 0 3.75b
Mean FD 0.12 ± 0.04 0.11 ± 0.05 1.32
  1. Mean ± SD are shown
  2. Mean FD: the frame-wise displacement (FD) of head position
  3. CIAS the score of Chinese Internet Addiction Scale
  4. *** p < 0.001, * p < 0.05
  5. nThere were only 7 of 24 HCs playing internet games
  6. aMann–Whitney U test
  7. bChi-square test