| Key Words | CONTENT ANALYSIS | SOFTWARE MAXQDA, 2015 |
| PHYSICAL ASPECT | ||
|
| Frequency | Frequency |
| Tired | 20 | 21 |
| To feel disturbed | 10 | 03 |
| Headache | 07 | 05 |
| Increased heart rate | 05 | 03 |
| Insomnia | 04 | 05 |
| Physical weakness | 03 | 03 |
| Uncomfortable | 03 | 02 |
| Lack of appetite | 02 | 02 |
| Joint pain | 01 | 00 |
| EMOTIONAL ASPECT | ||
| Nervousness | 20 | 20 |
| Aggressiveness | 08 | 04 |
| Isolation | 07 | 01 |
| Sadness | 06 | 07 |
| Frustration | 00 | 01 |
| To be on edge | 02 | 03 |
| Bad mood | 02 | 01 |
| Impulsive | 01 | 01 |
| Confused | 01 | 01 |
| COGNITIVE ASPECT | ||
| Lack of concentration | 24 | 23 |
| Oversight | 08 | 10 |
| Reduced alertness | 07 | 03 |
| Confusion in performing tasks | 07 | 06 |
| Incoordination | 03 | 02 |
| BEHAVIORAL ASPECT | ||
| Quiet | 08 | 08 |
| Unusual conduct | 08 | 09 |
| Violence | 06 | 05 |
| Withdrawal | 06 | 04 |
| Loss of control | 05 | 06 |
| Isolation | 04 | 04 |
| Talkative | 03 | 04 |
| Bad task execution | 03 | 04 |
| Unmotivated | 01 | 01 |
| Stress | 01 | 02 |
| Decline in yield | 01 | 00 |
| Become ineffective | 01 | 02 |
| Ask a lot of questions | 01 | 00 |
| Drowsiness | 01 | 01 |
| Loss of control | 01 | 06 |