Table 1

Risk factors by frequency of sexual intercourse

Frequency of sexual intercourse
Risk factorHigh (n=231)Intermediate (n=486)Low (n=197)
*Social class 18 missing; †father's social class 83 missing.
Systolic blood pressure142.5 (18.7)142.1 (19.1)142.4 (18.8)
FEV1/height21.0 (0.2)1.01 (0.2)0.9 (0.2)
Blood cholesterol5.7 (1.1)5.7 (1.2)5.6 (1.2)
Fibrinogen3.7 (0.9)3.7 (0.8)3.9 (0.9)
Current smoking (%)55.4 (128)52.5 (255)56.8 (112)
Social class % manual*56.7 (131/229)56.2 (273/479)67.0 (132/188)
Paternal social class manual†78.4 (181/212)74.9 (364/438)81.7 (161/181)
Self reported hypertension (%)15.6 (36)13.6 (66)23.9 (47)
ECG defined ischaemia (%)2.2 (5)3.1 (15)5.6 (11)
Angina (%)5.2 (12)7.4 (36)8.1 (16)