Table 2 Comparison of the Japanese Compulsive Internet Use Scale (CIUS) and the Internet Addiction Test (JIAT) mean scores for participants’ demographic subgroups and Internet-related characteristics
Total (%) | CIUS | IAT | ||
|---|---|---|---|---|
Mean (SD) | Mean (SD) | |||
Sex | Men | 323 (52) | 14.8 (9.65) | 34.5 (13.36) |
Women | 300 (48) | 14.8 (10.31) | 32.2 (12.28) | |
p = 0.925 | p < .001 | |||
Age | 16–19 | 44 (7) | 21.3 (11.16) | 42.6 (16.82) |
20–29 | 100 (16) | 18.5 (11.13) | 38.9 (16.12) | |
30–39 | 130 (21) | 15.7 (10.26) | 34.1 (12.51) | |
40–49 | 124 (20) | 14.2 (9.32) | 31.7 (11.35) | |
50–59 | 100 (16) | 12.2 (8.19) | 30.2 (9.82) | |
>60 | 125 (20) | 11.4 (7.9) | 29.2 (8.74) | |
p < 0.01 | p < .001 | |||
Areas | Kanto | 243 (39%) | 14.6 (10.18) | 32.8 (12.45) |
Hokkaido | 28 (4%) | 14.3 (8.6) | 32.5 (11.5) | |
Tohoku | 25 (4%) | 16.8 (12.07) | 36.8 (12.51) | |
Chubu | 90 (14%) | 14 (9.98) | 33.4 (13.73) | |
Kinki | 145 (23%) | 15.5 (9.66) | 34.1 (12.73) | |
Chukoku | 27 (4%) | 20.1 (11.56) | 39.4 (17.35) | |
Shikoku | 20 (3%) | 11.7 (7.79) | 28.9 (6.93) | |
Kyushu | 45 (7%) | 12.9 (8.21) | 31.6 (11.81) | |
p = 0.300 | p < .05 | |||
Education level | Middle school | 8 (1) | 20.9 (9.9) | 33.5 (13.0) |
High school | 189 (30) | 14.1 (9.9) | 32.6 (12.6) | |
Vocational school | 80 (13) | 13.9 (9.4) | 33.6 (13.1) | |
Four-year university/college degree | 309 (50) | 14.8 (10.2) | 33.2 (13.1) | |
Graduate school | 31 (5) | 20.4 (7.7) | 40.4 (11.9) | |
Other | 6 (1) | 13.3 (8.3) | 28.3 (4.3) | |
p < 0.05 | p = 0.056 | |||
Occupational status | Full-time worker | 192 (31) | 15.6 (9.9) | 33.5 (12.8) |
Contracted worker | 30 (5) | 14.0 (10.0) | 33.1 (11.1) | |
Dispatched worker | 13 (2) | 18.0 (10.8) | 37.9 (14.4) | |
Part-timer | 68 (11) | 13.5 (9.5) | 31.9 (12.1) | |
Self-employed | 25 (4) | 10.9 (7.7) | 31.1 (10.8) | |
Freeter | 32 (5) | 10.6 (8.5) | 32.0 (11.9) | |
Housewife/husband | 121 (19) | 13.4 (9.2) | 30.0 (10.7) | |
Student | 58 (9) | 20.7 (10.7) | 42.4 (16.0) | |
Jobless and others | 84 (13) | 14.4 (10.2) | 33.7 (13.1) | |
p < 0.001 | p < .001 | |||
Living | Living with others | 523 (84) | 14.4 (9.83) | 23.7 (12.59) |
Living alone | 100 (16) | 17 (10.45) | 36.9 (13.9) | |
p < 0.05 | p < .01 |