Table 3.
Characteristics of participants in current study and wave 5 of Twenty-07 Study
| Male | Female | All sub-study participants n = 50 (%) | All other wave 5 Twenty-07 participants (1970s and 1950s cohorts) n = 1864 (%) | P value for chi-square | ||
|---|---|---|---|---|---|---|
| BMI category | (% ) Range* | (% ) Range* | N | 0.002 | ||
| Normal (19.0 to 24.9) | 8 | 8 | (32.0) 19.9 - 24.0 | (26.6) 19.1 -25.0 | 492 | |
| Overweight (27.0 to 29.9) | 10 | 8 | (36. 0) 27.1 - 29.8 | (22.2) 27.0-30.0 | 413 | |
| Obese (30.0 +) | 8 | 8 | (32.0) 30.1 - 44.6 | (29.6) 30.0-63.4 | 558 | |
| Not eligible † | - | - | - | (21.5) | 401 | |
| % Body Fat | 0.315 | |||||
| Within quoted ranges (see Table 1) | 9 | 5 | (28.6) Men 16.0-20.4 Women 27.2-30.9 |
(24.1) Men 13.0-21.0 Women20.2-30.9 |
449 | |
| Above quoted ranges | 16 | 19 | (71.4) Men21.6-33.0 Women 31.1-53.1 |
(68.5) Men 21.1 -50.9 Women 31.1-61.7 |
1276 | |
| Not eligible ¥ | 1 | - | - | (7.4) | 139 | |
| Cholesterol | 0.061 | |||||
| Normal (≤4 mmol/L) | 11 | 17 | (57.1) 2.3 - 3.9 | (47.5) 1.80-4.0 | 886 | |
| High (>4 mmol/L) | 14 | 7 | (42.9) 4.1 - 7.9 | (39.2) 4.1-12.3 | 731 | |
| Missing | 1 | (13.3) | 247 | |||
| HbA1c | 0.060 | |||||
| Normal (<6%) | 24 | 22 | (93.9) 4.3 - 6.0 | (81.3) 3.4-6.0 | 1516 | |
| High (≥ 6%) | 1 | 2 | (6.1) 6.1 - 9.5 | (5.2) 6.1-13.6 | 96 | |
| Missing | 1 | (13.5) | 252 | |||
| Registrar General's Social Class for head of household | Percentage | Percentage | 0.585 | |||
| Professional/managerial household (I&II) | 16 | 13 | 58.0 | 49.0 | 913 | |
| Skilled workers (IIIn-m and man) | 9 | 7 | 32.0 | 36.5 | 681 | |
| Semi or unskilled household (IV&V) | 1 | 4 | 10.0 | 13.8 | 257 | |
| Missing | - | - | - | 0.7 | 13 | |
| Wave participation | Percentage | Percentage | 0.125 | |||
| Taken part in all 5 waves | 21 | 18 | 78.0 | 69.8 | 1314 | |
| Missed 1 wave | 1 | 2 | 6.0 | 17.0 | 311 | |
| Missed more than 1 wave | 4 | 4 | 16.0 | 13.1 | 239 | |
* Numbers rounded to 1d.p.
† Those with missing data, underweight or overweight with BMI between 25 and 27.
¥ Those with missing data or body fat less than 'normal range'.