Chlamydia pneumoniae seropositivity and social, biological, and lifestyle risk factors for ischaemic heart disease
| Men | Women | |||||
|---|---|---|---|---|---|---|
| Mean (SD) in seronegative men | Mean (SD) in seropositive men | Mean (SD) in seronegative women | Mean (SD) in seropositive women | |||
| Age (years) | 44.9 (11.5) | 45.3 (11.4) | 42.6 (12.2) | 45.6 (11.1) | ||
| Diastolic blood pressure (mm Hg) | 83.7 (11.2) | 83.5 (11.3) | 78.4 (10.2) | 78.3 (14.6) | ||
| Systolic blood pressure (mm Hg) | 135.4 (19.1) | 132.3 (18.4) | 127.0 (19.3) | 127.8 (23.1) | ||
| Body mass index (kg/m2) | 26.2 (4.4) | 26.2 (3.7) | 24.8 (5.0) | 25.6 (4.0) | ||
| Number (%) seronegative | Number (%) seropositive | Number (%) seronegative | Number (%) seropositive | |||
| Social class | Non-manual | 28 (30.8) | 63 (69.2) | 30 (33.0) | 61 (67.0) | |
| Manual | 18 (20.5) | 70 (79.5) | 18 (33.3) | 36 (66.7) | ||
| Tenure | Owned | 44 (27.2) | 118 (72.8) | 50 (31.6) | 108 (68.4) | |
| Rented | 9 (27.3) | 24 (72.7) | 10 (38.5) | 16 (61.5) | ||
| Highest educational level achieved | Primary, elementary or secondary school only | 25 (21.0) | 94 (79.0) | 34 (30.4) | 78 (69.6) | |
| Grammar school | 6 (24.0) | 19 (76.0) | 6 (37.5) | 10 (62.5) | ||
| Technical/polytech/nursing college | 12 (54.5) | 10 (45.5) | 13 (34.2) | 25 (65.8) | ||
| University | 10 (32.3) | 21 (67.7) | 8 (34.8) | 15 (65.2) | ||
| Smoking status | Never smoked | 21 (28.4) | 53 (71.6) | 30 (32.6) | 62 (67.4) | |
| Ex-smoker | 14 (23.0) | 47 (77.0) | 16 (35.6) | 29 (64.4) | ||
| Current smoker less than 20/day | 5 (20.8) | 19 (79.2) | 12 (34.3) | 23 (65.7) | ||
| Current smoker 20 or more/day | 14 (35.0) | 26 (65.0) | 3 (16.7) | 15 (83.3) | ||
| Alcohol consumption | Lifetime abstainer | 6 (46.2) | 7 (53.8) | 10 (28.6) | 25 (71.4) | |
| Current abstainer | 1 (7.1) | 13 (92.9) | 3 (17.6) | 14 (82.4) | ||
| Current drinker < 10 units/week | 18 (25.7) | 52 (74.3) | 36 (33.6) | 71 (66.4) | ||
| Current drinker 10 or more | 27 (27.3) | 72 (72.7) | 12 (41.4) | 17 (58.6) | ||
| Season | Not winter | 42 (31.1) | 93 (68.9) | 42 (35.9) | 75 (64.1) | |
| Winter | 12 (18.7) | 52 (81.3) | 22 (28.6) | 55 (71.4) | ||