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Table 1 Descriptive data at baseline. Mean (±standard deviation) or median (25–75 % interquartile range)

From: The effect of melatonin treatment on postural stability, muscle strength, and quality of life and sleep in postmenopausal women: a randomized controlled trial

  Placebo N = 41 Melatonin N = 40 P-value
Age, years 62.9 (±4.7) 62.4 (±3.5) 0.46
BMI (kg/m2) 24.9 (21.4;26.6) 23.6 (21.3;27.5) 0.38
Weight (kg) 66.6 (60.0;76.0) 65.0 (58.3;75.5) 0.58
Systolic blood pressure (mmHg) 143 (130;149) 138 (128;144) 0.15
Diastolic blood pressure (mmHg) 83 (77;92) 85 (76;91) 0.76
Heart rate 68 (64;75) 70 (64;76) 0.94
Dietary calcium (mg/d) 950 (800;1125) 975 (800;1100) 0.66
Previous fracture after the age of 55 years, (N %) 6 (15 %) 8 (20 %) 0.57
Prescribed medication, N (%) 21 (51 %) 20 (50 %) 0.99
Simvstatin, N (%) 5 (12 %) 3 (8 %) 0.71
Antidepressives, N (%) 2 (5 %) 2 (5 %) 0.99
Benodiazepines, N (%) 1 (2 %) 0 0.99
Antihypertensives, N (%) 6 (14 %) 4 (10 %) 0.74
Levothyroxine, N (%) 1 (2 %) 1 (2 %) 0.99
Pittsburgh Sleep Quality Index > 5 20 (49 %) 9 (23 %) 0.02