Table 1.

Demographic characteristic of the singers participating in the study conducted between 2015–2020 in Phoniatrics Clinic of the Medical University of Warsaw, Poland

Variable	Participants (N = 87)
Age [years]
M±SD	25.5±8.2
Me (min.–max)	23.0 (18–59)
Gender [n (%)]
male	21 (24.1)
female	66 (75.9)
Singing's time [years]
M±SD	8.8±6.0
Me (min.–max)	8.0 (1–33)
Individual singing training [years]
M±SD	4.2±3.3
Me (min.–max)	3.0 (0–63)
Singing status [n (%)]
student	40 (46.0)
professional	22 (25.3)
amateur	25 (28.7)
Singing solo/choral [n (%)]
choral	22 (25.3)
solo	55 (63.2)
choral and solo	10 (11.5)
Singing style [n (%)]
classical	38 (43.7)
contemporary commercial music	42 (48.3)
classical and contemporary commercial music	7 (8.0)