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

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**