Table 1.
The baseline characteristics of the study population and number and weighted percentage of individuals seropositive for CMV in England in 2002
| Variable | Total number | Number CMV seropositive (weighted %) |
|---|---|---|
| Total | 732 | 175 (23.7) |
| Sex | ||
| Male | 364 | 74 (20.4) |
| Female | 368 | 101 (26.9) |
| Age at last birthday (years) | ||
| 11–14 | 208 | 39 (18.3) |
| 15–18 | 212 | 52 (24.6) |
| 19–21 | 156 | 40 (25.6) |
| 22–24 | 156 | 44 (28.3) |
| Ethnicity | ||
| White | 665 | 127 (19.2) |
| Other | 77 | 48 (61.6) |
| BMI | ||
| Underweight | 60 | 17 (28.1) |
| Healthy weight | 418 | 94 (22.0) |
| Overweight | 141 | 34 (23.8) |
| Obese | 87 | 25 (29.9) |
| Missing | 26 | 5 (19.4) |
| EBV serostatus | ||
| EBV-seronegative | 547 | 34 (17.9) |
| EBV-seropositive | 185 | 141 (25.7) |
| Region of England | ||
| East of England | 78 | 24 (28.7) |
| North East | 34 | 6 (18.0) |
| North West | 130 | 27 (19.7) |
| Yorkshire and The Humber | 82 | 18 (22.1) |
| East Midlands | 74 | 13 (17.0) |
| West Midlands | 70 | 16 (23.4) |
| London | 63 | 30 (47.9) |
| South East | 119 | 20 (16.7) |
| South West | 82 | 21 (26.4) |
| Smoking statusa | ||
| Never smoked | 86 | 52 (27.9) |
| Current smoker | 134 | 35 (26.0) |
| smoker | 147 | 36 (24.5) |
| Missing | 5 | 3 (60.0) |
| Occupational categorya | ||
| Higher managerial and professional | 83 | 26 (31.6) |
| Intermediate occupations | 69 | 20 (28.9) |
| Routine and manual occupations | 254 | 61 (24.0) |
| Never worked or long-term unemployed | 11 | 2 (18.1) |
| Other | 55 | 17 (30.3) |
aAdults aged ≥16 years only (n = 472). Percentages account for the weighting of the sample to be representative of the English population in 2002 with respect to age and sex. BMI body mass index, CI confidence interval, CMV cytomegalovirus, EBV Epstein-Barr virus