Variable (unit)

Music group (n = 25)

Control group (n = 23)

P-value

Mean

SD

Mean

SD

Male^a (n, %)^a

16

64

9

56.52

0.5966

Female^a (n, %)

13

36

10

43.48

Age^b (year)

5.78

0.46

5.70

0.45

0.5665

Past NICU admissions^c (n, %)

0

0

4.00

17.39

0.0455

Past hospitalizations^d (times)

0.20

0.41

0.57

0.90

0.1216

Past surgeries^d (times)

0.04

0.20

0.26

0.69

0.1336

Past immunizations^d (times)

27.68

5.17

28.83

6.04

0.3307

Past injection^d (times)

2.12

2.65

2.30

6.27

0.1988

Influenza vaccinations during this season^d (times)

1.16

0.37

1.22

0.42

0.6253

Elder siblings who attended^d (persons)

0.24

0.44

0.22

0.42

0.8650

Younger siblings who attended^d (persons)

0.52

0.59

0.43

0.51

0.6782

Minimum sound levels in the treatment room^b (Hz)

46.01

2.71

47.13

4.09

0.2648

Maximum sound levels in the treatment room^d (Hz)

47.46

3.13

47.95

4.20

0.9236

Minimum sound levels in the waiting room^d (Hz)

52.28

4.59

53.55

4.25

0.2043

Maximum sound levels in the waiting room^b (Hz)

57.87

5.81

60.70

6.10

0.1097

Room temperature^d (˚C)

23.95

1.36

23.88

1.32

0.6052

Room humidity^b (%)

58.61

7.22

56.00

6.58

0.2068

Time to initiate the study^d (hours)

14.00

2.35

14.65

2.25

0.2954

Time to period from the initiation to immunization^d (minutes)

13.40

3.26

12.44

2.29

0.3218

Time to duration^d (minutes)

26.25

3.59

25.61

2.31

0.6647