Impact of overactive bladder on quality of life and resource use: results from Korean Burden of Incontinence Study (KOBIS)

Table 3 Multivariable regression to assess impact of OAB symptoms on QOL

Variables included in model	Coefficient	95 % CI	p-value
Multivariable model for IQOL total score (Adjusted R² = 0.394)
UI category	−5.09	−6.62, −3.55	<0.0001
Urinary frequency	−5.08	−8.36, −1.79	0.0025
Urinary urgency	−4.29	−5.54, −3.03	<0.0001
Nocturia	−5.00	−6.31, −3.69	<0.0001
Receiving treatment for OAB	−5.99	−9.23, −2.74	<0.0001
Age	0.29	0.15, 0.41	<0.0001
Gender	−8.60	−11.85, −5.35	<0.0001
Multivariable model for OAB−q – Symptom severity score (Adjusted R² = 0.543)
UI category	7.08	5.77, 8.39	<0.0001
Urinary frequency	6.38	3.56, 9.20	0.0029
Urinary urgency	5.58	4.51, 6.66	<0.0001
Nocturia	6.00	4.88, 7.12	<0.0001
Age	−0.15	−0.26, −0.04	0.007
Gender	−0.16	−2.94, 2.62	0.912
Multivariable model for EQ−5D utility (Adjusted R² = 0.121)
UI category	−0.01	−0.03, 0.005	0.174
Urinary frequency	−0.03	−0.06, 0.005	0.098
Urinary urgency	−0.02	−0.03, −0.008	0.001
Nocturia	−0.02	−0.04, −0.01	0.001
Age	−0.0005	−0.002, 0.001	0.457
Gender	−0.08	−0.11, −0.05	<0.0001

All variables included in the multivariable models for each of the QOL measures are shown above. Income and education did not show statistical significance and were not included in the models. OAB treatment status was only statistically significant for I−QOL

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