Table 2.
Differences in quantitative scores of addictive behaviors and psychological variables by grade and sex among medical students (N=866)
| Variables | Quantitative scores of addictive behaviors | Statistics |
Post-hoc | |||||
|---|---|---|---|---|---|---|---|---|
| F/t | p | |||||||
| 1. Grade | PMED1a (N=356) | MED1b (N=297) | MED3c (N=213) | |||||
| Addictive behaviors | ||||||||
| Internet use | 23.73±6.27 | 26.24±6.76 | 26.53±6.55 | 17.2 | <0.001 | a<b, a<c | ||
| Smartphone use | 24.98±6.71 | 27.32±7.75 | 26.89±7.63 | 9.4 | <0.001 | a<b, a<c | ||
| Alcohol use | 6.08±4.38 | 6.67±4.74 | 7.05±5.72 | 2.9 | 0.056 | |||
| Psychological variables | ||||||||
| Stress | 8.54±5.21 | 12.20±5.80 | 12.08±5.57 | 45.2 | <0.001 | a<b, a<c | ||
| Resilience | 74.27±14.34 | 70.42±17.60 | 72.77±17.09 | 4.6 | 0.011 | a>b | ||
| Self-esteem | 23.63±4.61 | 22.28±5.13 | 22.78±4.91 | 6.4 | 0.002 | a>b | ||
| 2. Sex | Total (N=866) | Male (N=613) | Female (N=253) | |||||
| Addictive behaviors | ||||||||
| Internet use | 25.28±6.63 | 25.91±6.73 | 23.75±6.14 | 4.4 | <0.001 | - | ||
| Smartphone use | 26.25±7.38 | 25.97±7.47 | 26.94±7.14 | -1.8 | 0.077 | - | ||
| Alcohol use | 6.52±4.87 | 7.07±4.84 | 5.19±4.70 | 5.3 | <0.001 | - | ||
| Psychological variables | ||||||||
| Stress | 10.67±5.78 | 10.64±5.80 | 10.74±5.73 | -0.2 | 0.819 | - | ||
| Resilience | 72.58±16.27 | 73.18±16.63 | 71.12±15.33 | 1.7 | 0.091 | - | ||
| Self-esteem | 22.96±4.90 | 23.17±4.80 | 22.45±5.10 | 2.0 | 0.047 | - | ||
Values are mean±standard deviation. Statistical significance was tested by analysis of variance (for grade distribution) and t-test (for sex distribution). PMED1, premedical first grade; MED1, medical first grade; MED3, medical third grade