Table 1.

Sample Characteristics of the Total and the Longitudinal Sample.

			Total Sample (n = 18,259)			Longitudinal Sample (n = 9,880)
Sample			N	Mean, SD	%	N	Mean, SD	%
Age				59.44, 5.98		at wave 1:	59.45, 5.64
Income	(Median)		20,934.61			25,420.67
Wealth	(Median)		113,475.01			127,530.81
Marital status	Married		14,214		77.8	7,694		77.9
	Single/separated/ divorced/widowed		4,041		22.1	2,184		22.1
Children	Ever had children	yes	15,754		87.8	8,526		87.5
		no	2,192		12.2	1,215		12.5
Employment	Job 1+/Number of jobs	yes	16,950	2.76, 2.15	93.2	8,939	2.74, 2.15	92.6
		no	1,231		6.8	710		7.4
	Still working		5,723		31.8	2,762		28.3
Cognitive function	Verbal fluency			20.16, 7.01		at wave 1:	20.18, 7.00
	Immediate recall			5.27, 1.66			5.27, 1.65
	Delayed recall			3.80, 1.92			3.81, 1.92
	Numeracy			3.52, 1.05			3.53, 1.05
	Orientationa			3.87, 0.40			3.87, 0.39
Global cognitive function b				0.01, 0.66		at wave 1:	0.02, 0.64
	Unimpaired		16,432		90.0	8,942		90.5
	Impaired		1,827		10.0	938		9.5
Economic inactivity	All types	no	7,543		41.3	4,018		40.5
		yes	10,716		58.7	5,908		59.5
	Unemployment	no	15,276		83.7	8,261		83.8
		yes	2,983		16.3	1,599		16.2
	Sickness	no	16,692		91.4	9,152		92.6
		yes	1,567		8.6	728		7.4
	Homemaker	no	12,159		66.6	6,330		64.1
		yes	6,100		33.4	3,550		35.9
	Training	no	16,925		92.7	9,078		91.9
		yes	1,334		7.3	802		8.1
	Maternity spellc	no	14,823		81.2	8,165		82.6
		yes	3,436		18.8	1,715		17.4

Note.

^aScores range from 0 to 100 (verbal fluency), 0 to 10 (immediate and delayed recall), 0 to 5 (numeracy), 0 to 4 (orientation)

^bAveraged z-scores of the five cognitive tests

^cMaternity spells were only assessed for women.