Table 2: Mean and standard deviation of self-reported measures of stress.

Psychological instruments Mean ± SD
STAI 6-item beginning of the protocol 2.02 ± 0.47
STAI 6-item end of the protocol
VAS baseline
VAS CRTT1
VAS TSST
VAS CRTT2
1.76 ± 0.39
3.39 ± 1.16
3.29 ± 1.36
5.41 ± 1.87
3.24 ± 1.25

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