Table 1(b).
Baseline characteristics of men according to cytomegalovirus (CMV) immunoglobulin (Ig)G antibody titres
| Cytomegalovirus IgG antibody titre quartiles | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | ||
| Characteristics | <230 titre (n = 292) | 240–5 400 titre (n = 139) | 5500–10 000 titre (n = 206) | 11 000–35 000 titre (n = 220) | P-value |
| Age (years)* | 30·8 (4·8) | 31·6 (4·9) | 31·5 (5·0) | 33·0 (5·1) | <0·001 |
| Smokers, % daily‡ | 23·4 | 39·6 | 30·6 | 28·2 | 0·796 |
| Occupational status, % manual‡** | 42·5 | 43·3 | 45·8 | 43·5 | 0·934 |
| Education, % comprehensive school‡ | 7·2 | 11·5 | 5·3 | 5·9 | 0·451 |
| Body mass index (kg/m2)* | 25·8 (4·1) | 25·5 (3·8) | 25·3 (3·6) | 26·1 (4·0) | 0·126 |
| Waist circumference (cm)* | 89·9 (11·4) | 89·6 (10·5) | 88·7 (10·0) | 90·2 (10·7) | 0·374 |
| Waist–hip ratio* | 0·89 (0·06) | 0·90 (0·07) | 0·89 (0·06) | 0·90 (0·06) | 0·347 |
| Systolic blood pressure (mmHg)* | 129·2 (13·2) | 127·5 (12·1) | 128·1 (11·9) | 130·8 (16·4) | 0·053 |
| Diastolic blood pressure (mmHg)* | 74·5 (8·8) | 73·9 (8·1) | 74·0 (7·8) | 76·8 (10·8) | 0·002 |
| Total cholesterol (mmol/l)* | 5·12 (0·99) | 5·27 (1·11) | 5·26 (0·96) | 5·25 (1·00) | 0·536 |
| HDL cholesterol (mmol/l)* | 1·16 (0·27) | 1·17 (0·28) | 1·17 (0·28) | 1·15 (0·27) | 0·282 |
| LDL cholesterol (mmol/l)* | 3·34 (0·90) | 3·45 (0·97) | 3·45 (0·88) | 3·45 (0·88) | 0·478 |
| Triglycerides (mmol/l)† | 1·20 (0·90–1·70) | 1·30 (0·90–1·90) | 1·20 (0·90–1·80) | 1·30 (0·90–1·80) | 0·460 |
| Glucose (mmol/l)* | 5·2 (0·5) | 5·3 (1·6) | 5·2 (0·5) | 5·2 (0·5) | 0·850 |
| Insulin (mU/l)† | 6·0 (4·0–9·0) | 6·0 (4·0–9·0) | 6·0 (4·0–9·0) | 7·0 (4·3–9·0) | 0·329 |
| C-reactive protein (mg/l)† | 0·56 (0·29–1·25) | 0·70 (0·26–1·51) | 0·52 (0·27–1·33) | 0·62 (0·30–1·43) | 0·236 |
| Physical activity index*,†† | 18·3 (18·3) | 13·1 (15·0) | 15·3 (16·9) | 15·1 (16·7) | 0·436 |
| Alcohol (no. drinks per week)* | 8·2 (9·3) | 10·6 (12·9) | 8·5 (8·3) | 7·6 (10·0) | 0·123 |
| IMT (mm)* | 0·59 (0·10) | 0·59 (0·09) | 0·60 (0·10) | 0·59 (0·11) | 0·811 |
| Cdist (%/10 mmHg)* | 2·04 (0·67) | 1·99 (0·64) | 2·03 (0·65) | 1·94 (0·66) | 0·086 |
| FMD (%)*‡‡ | 7·17 (3·96) | 6·96 (4·03) | 7·23 (4·42) | 6·36 (3·69) | 0·013 |
*
Mean values and standard deviation, t-test for difference between highest CMV antibody titrers compared to other groups.
†
Median values and interquartile range (IQR), Mann–Whitney U-test for difference between highest CMV antibody titres compared to other groups.
‡
Percentages and χ2 test for difference between highest CMV antibody titres compared to other groups.
**
Data missing for 126 participants.
††
Data missing for 91 participants.
‡‡
Data missing for 79 participants.
HDL: high-density lipoprotein; LDL: low-density lipoprotein; IMT: carotid intima-media thickness; Cdist: carotid artery distensibility; FMD: flow-mediated dilation.