Table 3. Distribution of Internet addiction cases by sociodemographic factors.
| Variables | n (%) | Mexico | Spain | |||
|---|---|---|---|---|---|---|
| NPIU (%) | PIU (%) | NPIU (%) | PIU (%) | p | ||
| Gender | ||||||
| Male | 272 (35.9) | 157 (57.72) | 21 (7.72) | 79 (29.04) | 15 (5.52) | .000 |
| Female | 486 (64.1) | 186 (38.27) | 23 (4.74) | 247 (50.82) | 30 (6.17) | |
| Age | ||||||
| <20 | 480 (63.3) | 289 (60.21) | 38 (7.92) | 134 (27.92) | 19 (3.95) | .000 |
| 21–35 | 278 (36.7) | 54 (19.42) | 6 (2.16) | 192 (69.06) | 26 (9.36) | |
| Field of knowledge | ||||||
| Arts and Humanities | 130 (17.2) | 72 (55.38) | 10 (7.69) | 39 (30) | 9 (6.93) | .000 |
| Sciences | 204 (26.9) | 143 (70.1) | 18 (8.82) | 36 (17.65) | 7 (3.43) | |
| Health Sciences | 67 (8.8) | 19 (28.36) | – | 45 (67.16) | 3 (4.48) | |
| Social and Legal Sciences | 321 (42.3) | 88 (27.41) | 14 (4.36) | 197 (61.38) | 22 (6.85) | |
| Engineering and Architecture | 36 (4.7) | 21 (58.33) | 2 (5.56) | 9 (25) | 4 (11.11) | |
| Marital status | ||||||
| Single | 583 (76.9) | 331 (56.77) | 42 (7.20) | 181 (31.05) | 29 (4.98) | .000 |
| Couple | 162 (21.4) | 5 (3.09) | 2 (1.23) | 140 (86.42) | 15 (9.26) | |
| Married | 8 (1.1) | 3 (37.5) | – | 4 (50) | 1 (12.5) | |
| Divorced | 5 (.7) | 4 (80) | – | 1 (20) | – | |
| Siblings | ||||||
| Yes | 694 (91.6) | 315 (45.39) | 42 (6.05) | 300 (43.23) | 37 (5.33) | .454 |
| No | 64 (8.4) | 28 (43.75) | 2 (3.13) | 26 (40.62) | 8 (12.5) | |
| Position between siblings | ||||||
| First | 359 (47.4) | 164 (45.68) | 22 (6.13) | 150 (41.78) | 23 (6.41) | .315 |
| Second | 270 (35.6) | 117 (43.33) | 9 (3.33) | 129 (47.78) | 15 (5.56) | |
| Third | 97 (12.8) | 45 (46.39) | 9 (9.28) | 38 (39.18) | 5 (5.15) | |
| Fourth | 22 (2.9) | 13 (59.09) | 2 (9.09) | 6 (27.27) | 1 (4.55) | |
| Fifth | 10 (1.3) | 4 (40) | 2 (20) | 3 (30) | 1 (10) | |
| Lives with parents | ||||||
| Yes | 477 (62.9) | 248 (52) | 35 (7.34) | 174 (36.48) | 20 (4.18) | .000 |
| No | 281 (37.1) | 95 (33.80) | 9 (3.20) | 152 (54.1) | 25 (8.9) | |
| Religious beliefs | ||||||
| Yes | 446 (58.8) | 273 (61.21) | 32 (7.17) | 126 (28.25) | 15 (3.37) | .000 |
| No | 312 (41.2) | 70 (22.44) | 12 (3.85) | 200 (64.10) | 30 (9.61) | |
| Sexual orientation | ||||||
| Heterosexual | 635 (83.8) | 318 (50.08) | 38 (5.98) | 252 (39.69) | 27 (4.25) | .000 |
| Homosexual | 30 (4) | 6 (20) | 1 (3.3) | 17 (56.7) | 6 (20) | |
| Bisexual | 93 (12.3) | 19 (20.43) | 5 (5.38) | 57 (61.29) | 12 (12.9) | |
| Number of social networks | ||||||
| ≤2 | 25 (3.3) | 11 (44) | – | 12 (48) | 2 (8) | .014 |
| 3 | 49 (6.5) | 17 (34.7) | 3 (6.12) | 29 (59.18) | – | |
| 4 | 68 (9) | 22 (32.35) | 1 (1.47) | 42 (61.76) | 3 (4.41) | |
| 5 | 81 (10.7) | 39 (48.15) | 2 (2.47) | 38 (46.91) | 2 (2.47) | |
| 6 | 125 (16.5) | 60 (48) | 5 (4) | 49 (39.2) | 11 (8.8) | |
| 7 | 156 (20.6) | 70 (44.88) | 17 (10.9) | 64 (41.02) | 5 (3.2) | |
| 8 | 117 (15.4) | 61 (52.14) | 7 (5.98) | 37 (31.62) | 12 (10.26) | |
| 9 | 77 (10.2) | 37 (48.05) | 4 (5.19) | 32 (41.57) | 4 (5.19) | |
| ≥10 | 60 (7.9) | 26 (43.34) | 5 (8.33) | 23 (38.33) | 6 (10) | |
| Daily Internet usage time for academic purposes | ||||||
| <1 hour | 69 (9.1) | 22 (31.89) | 7 (10.14) | 32 (46.38) | 8 (11.59) | .000 |
| 1–2 hours | 237 (31.3) | 87 (36.71) | 8 (3.37) | 120 (50.64) | 22 (9.28) | |
| 2–3 hours | 258 (34) | 122 (47.29) | 18 (6.98) | 109 (42.25) | 9 (3.48) | |
| 3–4 hours | 125 (16.5) | 73 (58.4) | 6 (4.8) | 44 (35.2) | 2 (1.6) | |
| 4–5 hours | 38 (5) | 19 (50) | 5 (13.15) | 10 (26.32) | 4 (10.53) | |
| >5 hours | 31 (4.1) | 20 (64.52) | – | 11 (35.48) | – | |
| Daily Internet usage time for leisure | ||||||
| <1 hour | 41 (5.4) | 21 (51.22) | – | 19 (46.34) | 1 (2.44) | .877 |
| 1–2 hours | 134 (17.7) | 63 (47.01) | 3 (2.24) | 65 (48.51) | 3 (2.24) | |
| 2–3 hours | 257 (33.9) | 114 (44.35) | 16 (6.23) | 117 (45.53) | 10 (3.89) | |
| 3–4 hours | 192 (25.3) | 91 (47.4) | 7 (3.65) | 77 (40.1) | 17 (8.85) | |
| 4–5 hours | 74 (9.8) | 34 (45.94) | 6 (8.11) | 26 (35.14) | 8 (10.81) | |
| >5 hours | 60 (7.9) | 20 (33.33) | 12 (20) | 22 (36.67) | 6 (10) | |
| Electronic device | ||||||
| Computer | 32 (4.2) | 18 (56.25) | 1 (3.13) | 9 (28.12) | 4 (12.5) | .859 |
| Laptop | 239 (31.5) | 107 (44.77) | 9 (3.77) | 111 (46.44) | 12 (5.02) | |
| Smartphone | 475 (62.7) | 214 (45.05) | 30 (6.32) | 203 (42.74) | 28 (5.89) | |
| Tablet | 12 (1.6) | 4 (33.33) | 4 (33.33) | 3 (25) | 1 (8.34) | |
p calculated through MANCOVA test;– = no event.