Table 1.
Characteristics of the participants enrolled in the study.
| Variables | Participants (n = 62) |
|---|---|
| Female sex | 54 (87) |
| Age (years) | 21.9 (2.0) |
| Education (years) | 15.8 (1.3) |
| Current smoker | 24 (39) |
| Regular alcohol use | 6 (10) |
| STAI-Y2 | 42.2 (12.5) |
| BDI-II | 8.4 (7.1) |
| Cognitive–affective symptoms | 4.4 (4.7) |
| Somatic symptoms | 4.0 (3.1) |
| HR (bpm) | 77.1 (11.8) |
| SDNN (ms) | 54.2 (19.9) |
| rMSSD (ms) | 42.5 (24.2) |
| NN50 count | 74.7 (57.0) |
Data are M (SD) of continuous and N (%) of categorical variables. BDI-II, Beck Depression Inventory-II; HR, heart rate; bpm, beats per minute; SDNN, standard deviation of NN intervals; rMSSD, the square root of the mean of the sum of the squares of differences between adjacent NN intervals in ms; NN50, number of interval differences of successive NN intervals greater than 50 ms.