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Table 1 Comparison of MVV reported by 48-h VD and UF in the entire study population and stratified according to the age, LUTD subtypes, and sex

From: Correspondence of uroflowmetry and voiding diary in evaluation of voiding volume in children with lower urinary tract dysfunction

  Pts, n UF-MVV median (min–max) VD-MVV median (min–max) P value
All Pts. (ml) 242 224 (57–739) 200 (50–700)  < 0.001*
(VV/EBC) (%)   84.1 (23.6–24.6) 73.1 (20–200)
Age
5–6 years (ml) 56 188.5 (57–433) 170 (50–360) 0.055*
(VV/EBC) (%)   91.9 (31.7–240.6) 83.3 (23.8–200)  
7–11 years (ml) 132 219 (78–558) 190 (60–700) 0.181*
(VV/EBC) (%)   75.8 (23.6–194.6) 66.7 (20–194.4)  
 ≥ 12 years (ml) 54 402 (160–739) 310 (100–600)  < 0.001*
(VV/EBC) (%)   90.9 (31.4–189.5) 68 (25.6–153.9)  
P value   0.01** 0.09**  
OAB (ml) 120 201.5 (57–663) 171.5 (50–600) 0.001*
(VV/EBC) (%)   77.3 (23.6–170) 62.5 (20–153.9)  
DV (ml) 86 329 (80–739) 260 (80–700) 0.030*
(VV/EBC) (%)   92.7 (31.4–240.6) 78.4 (33.3–200)  
MNE (ml) 36 215 (97–488) 200 (100–450) 0.206*
(VV/EBC) (%)   77.4 (35.9–167.4) 83.3 (29.8–166.7)  
P value    < 0.001**  < 0.001**  
Sex
Boy (ml) 100 226.5 (86–637) 166.5 (50–620)  < 0.001*
(VV/EBC) (%)   84.8 (37.8–178.8) 63.1 (23.8–172.2)  
Girl (ml) 142 223 (57–739) 200 (60–700) 0.063*
(VV/EBC) (%)   83.0 (23.6–240.6) 79.2 (20–200)  
P value   0.951** 0.062**  
  1. Pts: Patients, MVV: maximum voided volume, UF: uroflowmetry, VD: voiding diary, VV: voided volume, EBC: estimated bladder capacity, LUTD: lower urinary tract dysfunction, OAB: overactive bladder, DV: Dysfunctional voiding, MNE: monosymptomatic nocturnal enuresis 
  2. Bold values indicate P value < 0.05
  3. *Mann–Whitney test, ** Kruskal–Wallis test