Table 4.

Crowding in home, fathers’ social class, sons’ heights and body mass indices at age 11 years, and hazard ratios for death from coronary heart disease in sons

No of people per room	No of men	% fathers in upper social class	Sons’ height (cm)	Sons’ body mass index (kg/m2)	Sons’ hazard ratio for death from coronary heart disease
−1.5	395	10.0	140.6	16.5	1.00
−2.5	946	5.2	139.6	16.4	1.19
−3.5	791	1.7	138.7	16.5	1.11
−4.5	521	1.9	138.8	16.4	1.06
>4.5	395	2.1	136.8	16.2	0.67
All	3048	4.0	139.0	16.4	—
P for trend	—	<0.0001	<0.0001	0.003	0.11