Table 1 Baseline characteristics of female overactive bladder patients in the daytime and nighttime dosing groups (n = 109).

From: Mirabegron nighttime versus daytime dosing for women with overactive bladder syndrome: a randomized controlled trial

Variables

Daytime (n = 52)

Nighttime (n = 57)

p

Age (years)

60.6 ± 12.2

60.2 ± 12.0

0.85

Parity

2.5 ± 1.1

2.3 ± 1.1

0.38

Body mass index (kg/m2)

24.1 ± 5.5

25.6 ± 4.6

0.13

Systolic blood pressure (mmHg)

132 ± 24

133 ± 15

0.97

Diastolic blood pressure (mmHg)

76 ± 12

75 ± 11

0.68

Heart rate (beat per minute)

75 ± 11

76 ± 11

0.52

USS (0–4)

2.3 ± 1.2

2.1 ± 1.0

0.36

OABSS (0–15)

6.8 ± 3.6

5.4 ± 2.6

0.02

OABSS Q2 (i.e., nocturia) (0–3)

2.0 ± 0.9

2.0 ± 1.0

0.76

UDI-6 (0–18)

7.5 ± 3.8

7.5 ± 3.8

0.99

IIQ-7 (0–21)

8.1 ± 5.3

7.6 ± 5.4

0.63

Stress urinary incontinence

8 (15)

11 (19)

0.62

Bladder oversensitivity

36 (69)

43 (75)

0.47

Detrusor overactivity

11 (21)

5 (9)

0.10

Urodynamic stress incontinence

26 (50)

24 (42)

0.44

Pad weight (g)

45 ± 70

69 ± 86

0.12

Qmax (mL/s)

23 ± 13

27 ± 18

0.26

Voided volume (mL)

276 ± 163

284 ± 132

0.76

Postvoid residual volume (mL)

106 ± 79

96 ± 57

0.47

Strong desire to void (mL)

291 ± 130

275 ± 92

0.48

PdetQmax (mmHg)

40 ± 32

37 ± 22

0.52

MUCP (cmH2O)

80 ± 34

83 ± 33

0.64

Voiding episodes (72 h)

 06:00–12:00

8.0 ± 3.6

9.4 ± 4.4

0.09

 12:00–18:00

9.5 ± 4.4

10.2 ± 4.9

0.49

 18:00–24:00

8.1 ± 4.3

8.8 ± 3.4

0.34

 24:00–06:00

6.0 ± 3.7

5.5 ± 3.3

0.52

 All day

31.6 ± 11.5

33.9 ± 11.9

0.33

Urgency episodes (72 h)

 06:00–12:00

1.7 ± 2.0

3.2 ± 3.9

0.02

 12:00–18:00

1.9 ± 2.7

3.2 ± 4.3

0.07

 18:00–24:00

1.1 ± 1.7

2.4 ± 3.3

0.01

 24:00–06:00

1.4 ± 2.4

1.8 ± 2.7

0.45

 All day

6.0 ± 7.1

10.6 ± 12.7

0.03

Incontinence episodes (72 h)

 06:00–12:00

0.3 ± 0.9

0.3 ± 0.7

0.84

 12:00–18:00

0.6 ± 1.3

0.3 ± 0.6

0.13

 18:00–24:00

0.4 ± 0.9

0.4 ± 0.8

0.95

 24:00–06:00

0.5 ± 1.2

0.1 ± 0.5

0.04

 All day

1.8 ± 3.3

1.2 ± 1.8

0.22

Nocturia episodes (72 h)

6.4 ± 4.8

6.1 ± 4.2

0.79

Fluid intake (mL/72 h)

 06:00–12:00

1705 ± 851

1712 ± 1023

0.97

 12:00–18:00

1631 ± 698

1492 ± 971

0.43

 18:00–24:00

1122 ± 846

1266 ± 846

0.41

 24:00–06:00

560 ± 537

378 ± 468

0.08

 All day

4609 ± 2263

4574 ± 2511

0.94

Total voided volume (mL/72 h)

 06:00–12:00

1429 ± 822

1427 ± 730

0.99

 12:00–18:00

1558 ± 777

1527 ± 971

0.86

 18:00–24:00

1371 ± 835

1422 ± 1192

0.80

 24:00–06:00

1243 ± 853

1167 ± 858

0.65

 All day

5602 ± 2070

5488 ± 2389

0.80

Voided volume per micturition (mL)

 06:00–12:00

191 ± 91

161 ± 88

0.09

 12:00–18:00

179 ± 103

160 ± 96

0.35

 18:00–24:00

195 ± 134

163 ± 131

0.23

 24:00–06:00

234 ± 138

235 ± 138

0.97

  1. Values are given as the mean ± standard deviation. IIQ-7 = Incontinence Impact Questionnaire; MUCP = maximum urethral closure pressure; OABSS = Overactive Bladder Symptoms Score; PdetQmax = detrusor pressure at maximum flow rate; Q2 = Question 2; Qmax = maximum flow rate; UDI-6 = Urogenital Distress Inventory; USS = Urgency Severity Scale.
  2. By paired t test.
  3. Only 16 women in the daytime group and 23 in the nighttime group have paired data about nocturia at 4 weeks. Only 11 women in the daytime group and 12 in the nighttime group have paired data about nocturia at 12 weeks.