Table 1.

Summary Characteristics for the 6,285 Subjects in the Aberdeen Children of the 1950s Study With Follow-up in 2001

Characteristic	No.	%	Mean (SD)	Median (IQR)
Poor self-rated health	1,251	19.7
GHQ-4 score indicating poor healtha	1,264	20.0
Individual level
Sex
Men	3,067	48
Women	3,268	52
Overcrowdingb	3,760	59.4
No home ownership	5,233	82.6
Family size >3 people	1,981	31
Occupational class
I (Professional) or II (managerial)	649	10.2
III-NM (Skilled nonmanual)	2,404	37.9
III-M (Skilled manual)	1,223	19.3
IV (Partly skilled)	862	13.6
V (Unskilled)	924	14.6
Other	273	4.3
Neighborhood level
Proportion lacking 4 amenitiesc				30 (8–54)
Proportion without home ownershipd				86 (72–96)
School level
Proportion of fathers in occupational class I or IIe				8 (3–14)
Adult factors
Age			47 (1.5)
Occupational class
I or II (Professional or managerial)	2,627	41.5
III-NM (Skilled nonmanual)	1,586	25.0
III-M (Skilled manual)	1,147	18.1
IV or V (Partly skilled or unskilled)	917	14.5
Other	58	0.9
Age on leaving school, years
<16	2,938	46.4
16	1,461	23.0
>16	1,936	30.6

Abbreviations: GHQ-4, 4-item version of the General Health Questionnaire; IQR, interquartile range; SD, standard deviation.

^a Mental health was assessed using the GHQ-4, which asks whether, in the past few weeks, respondents have been 1) feeling reasonably happy, all things considered; 2) able to enjoy your normal day-to-day activities; 3) losing confidence in yourself; and 4) feeling unhappy and depressed.

^b More than 1 person per room in the home.

^c Proportion of homes in the enumeration district without the following 4 amenities: hot water, cold water, fixed bath, and toilet.

^d Proportion of people who did not own their own homes in the enumeration district.

^e Proportion of children with fathers from professional and managerial occupational classes.