Prevalence, incidence and remission of urinary incontinence in women: longitudinal data from the Norwegian HUNT study (EPINCONT)

Table 2 Characteristics of the women participating in EPINCONT1 (E1, 1995 – 1997), EPINCONT2 (E2, 2006 – 2008) and both EPINCONT surveys

	E1		E2		P^b	E1 and E2^c		P^d
Participants^a	N = 27 992		N = 21 804			N = 14 606
	N	%	N	%		N	%
Age distribution (years)					<0.001			<0.001
20 – 34	6 630	23.7	3 113	14.3		494	3.4
35 – 49	8 671	31.0	6 132	28.1		3 967	27.2
50 – 64	6 589	23.5	7 352	33.7		5 910	40.5
65 +	6 101	21.8	5 207	23.9		4 235	29.0
BMI					<0.001			<0.001
Underweight (≤ 18.4)	267	1.0	182	0.8		89	0.6
Normal (18.5 – 24.9)	12 169	43.8	8 212	37.8		5 095	35.0
Overweight (25.0 – 29.9)	10 301	37.1	8 260	38.0		5 839	40.1
Obese (≥ 30)	5 028	18.1	5 072	23.3		3 538	24.3
Self-perceived health status					0.038			<0.001
Bad	449	1.6	274	1.3		176	1.2
Not entirely good	7 312	26.3	5 569	26.4		4 007	28.4
Good	15 488	55.8	11 834	56.1		7 935	56.2
Excellent	4 505	16.2	3 424	16.2		2 006	14.2
Smoking					0.095			0.009
Not smoking	19 651	71.2	15 273	71.4		10 395	73.1
Smoking	7 952	28.8	5 975	28.1		3 818	26.9
Glasses alcohol last 2 weeks					<0.001			0.016
0	7 002	34.0	5 947	32.3		3 805	30.9
1 – 4	11 425	55.5	9 421	51.2		6 356	51.6
>5	2 160	10.5	3 047	16.5		2 147	17.4
Parity					<0.001			<0.001
0	3 931	14.2	2 633	12.1		895	6.1
1	3 229	11.7	2 090	9.6		1 150	7.9
2	8 951	32.3	7 633	35.1		5 446	37.3
3+	11 595	41.9	9 415	43.2		7 101	48.7
Hysterectomy	1 773	13.4	2 040	10.6	<0.001	1 574	11.2	0.111
Asthma	2 390	8.6	2 318	10.6	<0.001	1 534	10.5	0.694
Chronic cough	829	3.0	881	4.1	<0.001	605	4.2	0.615
Diabetes	739	2.6	816	3.7	<0.001	613	4.2	0.029
Angina	979	3.5	534	2.4	<0.001	415	2.8	0.021
Heart attack	415	1.5	327	1.5	0.893	258	1.8	0.047
Stroke	459	1.6	474	2.2	<0.001	368	2.5	0.032

^a: Women with a valid answer to the entry question in EPINCONT.
^b: p - values from chi - square tests comparing the women who participated in E1 with those who participated in E2.
^c: Variables from HUNT3 were used.
^d: p - values from chi - square tests comparing women who participated in E2 with those who participated in both E1 and E2.

ISSN: 1471-2490