Table 1.
Prevalence of risky internet, smartphone, and alcohol users by grade and sex among medical students (N=866)
| Addictive behaviors | Prevalence (N, %) | χ2* | p | ||||
|---|---|---|---|---|---|---|---|
| 1. Grade | PMED1 (N=356) | MED1 (N=297) | MED3 (N=213) | ||||
| Internet use | |||||||
| Normal | 339 (95.2) | 272 (91.6) | 190 (89.2) | 7.5 | 0.023 | ||
| Potential risk group | 14 (3.9) | 20 (6.7) | 16 (7.5) | ||||
| High-risk group | 3(0.9) | 5 (1.7) | 7 (3.3) | ||||
| Smartphone use | |||||||
| Normal | 336 (94.4) | 268 (90.2) | 196 (92.0) | 4.0 | 0.135 | ||
| Potential risk group | 16 (4.5) | 22 (7.4) | 9 (4.2) | ||||
| High-risk group | 4 (1.1) | 7 (2.4%) | 8 (3.8) | ||||
| Alcohol use | |||||||
| Normal | 271 (76.1) | 213 (71.7) | 140 (65.7) | 7.2 | 0.028 | ||
| Potential risk group | 78 (21.9) | 63 (21.2) | 55 (25.8) | ||||
| High-risk group | 7 (2.0) | 21 (7.1) | 18 (8.5) | ||||
| 2. Sex | Total (N=866) | Male (N=613) | Female (N=253) | ||||
| Internet use | |||||||
| Normal | 801 (92.5) | 562 (91.7) | 239 (94.5) | 2.0 | 0.157 | ||
| Potential-risk group | 50 (5.8) | 38 (6.2) | 12 (4.7) | ||||
| High-risk group | 15 (1.7) | 13 (2.1) | 2 (0.8) | ||||
| Smartphone use | |||||||
| Normal | 800 (92.4) | 563 (91.8) | 237 (93.7) | 0.9 | 0.355 | ||
| Potential-risk group | 47 (5.4) | 36 (5.9) | 11 (4.3) | ||||
| High-risk group | 19 (2.2) | 14 (2.3) | 5(2.0) | ||||
| Alcohol use | |||||||
| Normal | 624 (72.1) | 464 (75.7) | 160 (63.2) | 13.8 | <0.001 | ||
| Potential-risk group | 196 (22.6) | 132 (21.5) | 64 (25.3) | ||||
| High-risk group | 46 (5.3) | 17 (2.8) | 29 (11.5) | ||||
*
since the number of high-risk group for all addictive behaviors was too small for analysis, the prevalence of high- plus potential-risk users were compared between groups. PMED1, premedical first grade; MED1, medical first grade; MED3, medical third grade