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Table 3 Clinical characteristics of the patients according to the BMI

From: Underweight body mass index is a risk factor of mortality in outpatients with nocturia in Japan

Characteristics BMI P value*
<18.50 18.50–24.99 ≥25.00
No. patients 22 128 43  
Age (years), median (IQR) 75 (10) 73 (11) 70 (9) <0.05
Female, no. (%) 7 (31.8) 23 (18.0) 7 (16.3) 0.27
BMI, median (IQR) 17.4 (1.5) 21.9 (3.1) 27.1 (3.4) NA
IPSS score 7, median (IQR) 4 (1.3) 4 (1.0) 4 (1) 0.54
IPSS total score, median (IQR) 11 (13.8) 15 (9) 15 (10) 0.74
IPSS QOL, median (IQR) 5 (1) 5 (1) 4 (1.3) 0.21
SF-36 PCS, median (IQR) 40.3 (25.6) 46.1 (14.4) 47.0 (11.6) 0.74
SF-36 MCS, median (IQR) 48.0 (13.4) 50.2 (14.1) 49.5 (12.5) 0.46
SF-36 RCS, median (IQR) 38.9 (30.5) 47.1 (23.3) 47.1 (23.3) 0.3
PSQI, median (IQR) 9 (6) 8 (7) 7.5 (7) 0.81
NPi, median (IQR) 0.46 (0.37) 0.43 (0.32) 0.43 (0.35) 0.59
Charlson Comorbidity Score 1 (2) 1 (2) 0 (2) 0.36
Follow up (years), median (IQR) 4.27 (3.25) 4.73 (4.91) 5.65 (6.07) 0.21