Table 2.

One-year period prevalence, frequency, and mean total duration of OAUs during the past year in the general population (controls) and BD patients according to sex and age (n = 1,772).

Sex, age	No. BD patientsa/no. controlsa	BD patients					Controls					P-value
		One-year period prevalence, %	Mean no. OAUs	SD	Mean total duration, day	SD	One-year period prevalence, %	Mean no. OAUs	SD	Mean total duration, day	SD	One-year period prevalence	Mean no. OAUs	Mean total duration
Males
20–29	11/64	81.8	24.4	(30.9)	38.3	(38.6)	54.7	2.8	(4.0)	13.1	(21.7)	0.091	0.043	0.059
30–39	25/93	100.0	32.0	(52.5)	111.0	(104.7)	38.7	1.3	(2.2)	6.5	(14.2)	<0.001	0.007	<0.001
40–49	61/90	90.2	16.1	(47.3)	60.5	(91.0)	25.6	1.1	(2.9)	3.0	(8.5)	<0.001	0.016	<0.001
50–59	102/111	80.4	9.0	(11.8)	47.4	(68.9)	23.4	0.6	(1.6)	2.3	(5.6)	<0.001	<0.001	<0.001
60–69	109/110	67.0	10.2	(35.8)	39.7	(68.1)	16.4	0.6	(2.5)	1.6	(4.8)	<0.001	0.006	<0.001
70–79	41/64	73.2	6.2	(10.4)	34.6	(66.3)	15.6	0.3	(0.9)	1.5	(5.9)	<0.001	0.001	0.003
Total	349/532	78.5	12.4	(33.1)	61.7	(77.2)	27.8	1.0	(2.6)	4.2	(11.5)	<0.001	<0.001	<0.001
Females
20–29	11/45	100.0	9.6	(9.5)	47.3	(34.2)	51.1	1.7	(2.7)	6.8	(9.5)	0.003	0.021	0.003
30–39	37/102	94.6	9.3	(10.5)	57.2	(63.3)	49.0	1.7	(2.5)	7.6	(14.2)	<0.001	<0.001	<0.001
40–49	51/110	94.1	18.9	(52.5)	89.2	(88.8)	41.8	1.5	(2.6)	7.4	(15.6)	<0.001	0.022	<0.001
50–59	81/120	91.4	14.4	(26.5)	65.7	(79.8)	30.8	1.0	(2.4)	4.1	(10.9)	<0.001	<0.001	<0.001
60–69	103/96	83.5	8.5	(10.8)	50.0	(75.2)	13.5	0.4	(1.1)	1.5	(5.4)	<0.001	<0.001	<0.001
70–79	43/92	88.4	18.2	(40.7)	57.4	(75.6)	25.0	0.7	(1.8)	4.3	(15.0)	<0.001	0.007	<0.001
Total	326/565	89.6	13.0	(29.6)	61.7	(77.2)	34.0	1.1	(2.3)	5.2	(12.7)	<0.001	<0.001	<0.001

^aAll BD patients and controls were analyzed, regardless of the 1-year period prevalence of OAUs.