Table 4.

Characteristics of the 6 patients that listened to 432 Hz music and 6 patients that listened to 440 Hz music in the first period of the study

	1 listening_432 Hz		1 listening_ 440 Hz
Variables	Male n 5	Female n 1	Male n 3	Female n 3
Age, average years (SD; range)	55.60 (±16.19; 30-73)	45	62.33 (±9.07; 54-72)	60 (±14,73; 43-69)
Time spent in hospital n (% partial) >3 months <3 months	5 (100%)	1 (100%)	1 (33.33%) 2 (66.66%)	2 (66.66%) 1 (33.33%)
Reasons for admission n (% partial) Polytrauma Descending thoracic aorta aneurysm surgery Lumbar vertebral stenosis and multiple discopathies Post-surgical epidural haematoma Surgically treated spinal infection	3 (60%) 1 (20%) 1 (20%)	1 (100%)	3 (100%)	1 (33.33%) 1 (33.33%) 1 (33.33%)
Outcomes of spinal cord injury n (% partial) Paraplegia Tetraplegia	3 (60%) 2 (40%)	1 (100%)	2 (66.66%) 1 (33.33%)	1 (33.33%) 2 (66.66%)
Principal pathologies present n (% partial) Cardiopathy COPD Diabetes mellitus type 2 Arterial hypertension Dyslipidemia Bipolarism Depressive syndrome Drug addiction	1 (20%) 1 (20%) 2 (40%) 1 (20%)	1 (100%)	1 (33.33%) 2 (66.66%) 3 (100%) 1 (33.33%)	1 (33.33%) 1 (33.33%) 2 (66.66%) 1 (33.33%)
Drug therapy n (%) Opiates Muscle relaxants Antidepressants Anti-coagulants/anti-aggregants Gastroprotectors Antipsychotics Diuretics Antihypertensives Benzodiazepines (to facilitate sleep)	1 (20%) 1 (20%) 1 (20%) 4 (80%) 3 (60%) 2 (40%) 2 (40%)	1 (100%) 1 (100%) 1 (100%) 1 (100%) 1 (100%)	1 (33.33%) 1 (33.33%) 3 (100%) 3 (100%) 1 (33.33%) 2 (66.66%)	2 (66.66%) 2 (66.66%) 2 (66.66%) 3 (100%) 1 (33.33%) 1 (33.33%)
Type of physiotherapy n (%) Gym activities None	5 (100%)	1 (100%)	1 (33.33%) 2 (66.66%)	3 (100%)
Favorite music/choice n (% partial) Classic International Pop Italian pop American country Rock Celtic Meditation Progressive Reggae	1 (20%) 2 (40%) 1 (20%) 2 (40%) 1 (20%) 1 (20%) 1 (20%)	1 (100%) 1 (100%)	1 (33.33%) 2 (66.66%) 1 (33.33%)	2 (66.66%) 1 (33.33%) 2 (66.66%) 1 (33.33%) 1 (33.33%)
Return home Saturday and Sunday n (% partial) YES NO	2 (40%) 3 (60%)	1 (100%)	3 (100%)	2 (66.66%) 1 (33.33%)
Days of listening n (% partial) 3 4 7 10 13	1 (20%)	1 (100%)	1 (33.33%) 2 (66.66%)	2 (66.66%) 1 (33.33%)
Days of wash out period n, (% partial) 1 3 4 7	4 (80%) 1 (20%)	1 (100%)	2 (66.66%) 1 (33.33%)	2 (66.66%) 1 (33.33%)
Events that may have affected the effects under investigation n, (% partial) Fighting with nurses Change in drug therapy	1 (20%)		1 (33.33%)	1 (33.33%)