Table 2.

Demographic characteristics of subjects with chronic^a major depression, n (%).

	Men			Women
	All n = 458,836	Chronic major depressiona 3.3%	Never depressedb 96.7%	All n=87,678	Chronic major depressiona 4.5%	Never depressedb 95.5%
Age (year)
30–34	103,574	3.2%	96.8%	36,435	4.3%	95.7%
35–39	103,392	3.5%	96.5%	22,275	4.3%	95.7%
40–44	79,085	3.5%	97.1%	14,132	4.2%	95.8%
45–49	66,223	3.3%	96.7%	7191	6.0%	93.9%
50–54	61,547	3.0%	97.0%	4758	5.8%	94.2%
55–59	36,988	2.4%	97.6%	2363	4.1%	95.9%
60–64	8027	2.4%	97.6%	524	3.6%	96.4%
Marital status
Married	435,315	3.2%	96.8%	75,278	4.5%	95.5%
Never married	13,500	4.4%	95.6%	8863	4.3%	95.7%
Else	7133	5.5%	94.5%	3113	5.2%	94.8%
Socioeconomic status
1 St Quartile	93,291	3.6%	96.4%	10,470	4.8%	95.2%
2nd Quartile	84,616	3.3%	96.7%	12,847	5.0%	95.0%
3rd Quartile	97,902	3.3%	96.7%	29,423	4.0%	96.0%
4th Quartile	99,066	2.7%	97.3%	18,523	4.5%	95.5%
Smoking status
Non smoker	97,300	2.3%	97.7%	87,150	4.5%	95.5%
Ex smoker	90,584	2.9%	97.1%	328	4.6%	95.4%
Current smoker	270,952	3.7%	96.3%	200	7.0%	93.0%
Drinking status
Non drinker	90,417	2.5%	97.5%	74,301	4.1%	95.9%
0-25 g/d	259,650	2.9%	97.1%	13,226	6.8%	93.2%
25-50 g/d	66,103	3.8%	96.2%	118	7.6%	92.4%
50-100 g/d	32,533	5.7%	94.3%	26	3.8%	96.2%
100-g/d	10,133	7.4%	92.6%	7	0.0%	100.0%
Regular exercise
Regular exercise	130,010	1.7%	98.3%	11,297	2.9%	97.1%
No exercise	328,826	3.9%	96.1%	3,619	4.7%	95.3%

^aChronic major depression=major depression in 1992 and major depression in 1994, among those who were interviewed at both waves.

^bNever depressed = not depressed in 1992 and not depressed in 1994.