Characteristics | Group I (n = 8) | Group II (n = 34) | Group III (n = 43) |
p-value*
|
|---|
Age (years) | 58.6 (4.3)a
| 41.1 (11.4)b
| 30.6 (10.1)c
| < 0.001 |
Sex (n (%)) |
 Men | 6 (75.0) | 23 (67.6) | 24 (55.8) | 0.477 |
 Women | 2 (25.0) | 11 (32.4) | 19 (44.2) |  |
Education (years) | 13.3 (3.5)a
| 15.5 (1.5)b
| 15.1 (1.8)b
| 0.011 |
Typing speedâ€
| 0a
| 119.7 (65.2)b
| 325.4 (110.9)c
| < 0.001 |
- The value are expressed as mean (standard deviation) for age, education, and typing speed
- Group I, subjects with a score of 0 per minute (no competency using computer); Group II, subjects with a score of less than 200 per minute (relatively familiar with the computer); Group III, subjects with a score of over 200 per minute (very familiar with the computer). *calculated by one-way ANOVA or Fisher’s exact test, different letters such as a, b and c in row indicate differences at the 5 % significance level by post hoc test of Bonferroni F. †number of Korean character typed in a minute
