Table 1.

Included participants' characteristics (n = 1714) by chronicity of mental health disorders.

	n	Chronicity of mental health disordersa				p valueb
		No lifetime disorder n = 378	Remitted disorder(s) n = 428	Low-medium chronicity n = 444	High chronicity n = 464
		m/% (SD)	m/% (SD)	m/% (SD)	m/% (SD)
Pre-Covid characteristics
Age in April 2020 (Years)	1714	58.2 (14.5)	55.9 (13.0)	56.4 (13.0)	55.1 (12.5)	0.0078
Gender (Woman)	1714	55.0	65.9	68.7	65.5	<0.0001
Education	1710
Basic	55	2.1	3.1	2.9	4.5
Intermediate	943	47.2	56.7	55.9	59.5
High	712	50.7	40.2	41.2	36.0	0.0016
Source study	1714
NESDA	1492	90.7	95.1	90.8	73.1
NESDO	78	9.3	0.0	4.1	5.4
NOCDA	144	0.0	4.9	5.2	21.6
Type of current (6-month) disorders present since 2006d
Major Depressive Disorder	1714	..	..	61.0	66.8
Dysthymia	1714	..	..	15.5	32.5
Generalized Anxiety Disorder	1714	..	..	18.9	33.8
Panic Disorder	1714	..	..	21.6	44.2
Social Phobia	1714	..	..	26.4	51.5
Obsessive-Compulsive Disorder	1714	..	..	4.7	21.6
Characteristics during Covid follow-up
Number of waves participatedc	1714	6 (3−10)	5 (2–9)	6 (2−10)	5 (2–9)	0.096
Covid-19 diagnosis participant	1687	4.8	6.0	4.1	4.2	0.55
Covid-19 diagnosis household member	1697	31.4	33.3	34.7	39.9	0.055
Close contact died from Covid-19	1228	5.0	9.9	7.8	9.6	0.12
Mental health treatment	1612
Yes, currently	940	6.7	27.2	45.2	68.8
No, but felt need for treatment	53	1.4	3.2	4.3	4.0
No, and did not feel need	619	91.9	69.6	50.6	27.3	<0.0001

^aPercentage of previous waves since 2006 with ‘current’ (6-month) mental disorders.

^bF-test, Chi-square test or Mood's median test as appropriate.

^cMedian (25th percentile – 75th percentile).

^dObsessive-Compulsive Disorder only ascertained in NOCDA.