Table 1.
Characteristics of study participants. Values given in per cent, with number of individuals in parentheses
| Percentage of individuals per category in each year (No.) | |||||
|---|---|---|---|---|---|
| 2011–12 (N = 1669) | 2012–13 (N = 3443) | 2013–14 (N = 3292) | 2014–15 (N = 3301) | Combined (N = 11,705) | |
| Gender | |||||
| Male | 39 (651) | 37.4 (1287) | 35.6 (1173) | 34.4 (1135) | 36.3 (4246) |
| Female | 61 (1018) | 62.6 (2156) | 64.4 (2119) | 65.6(2166) | 63.7 (7459) |
| Age (years) | |||||
| 0–18 | 4.9 (81) | 5.2 (179) | 9.5 (314) | 6.1 (200) | 6.6 (774) |
| 19–45 | 46.6 (777) | 44 (1515) | 39.9 (1313) | 37.5 (1237) | 41.4 (4842) |
| 46–65 | 37.2 (620) | 38.8 (1336) | 37.2 (1224) | 41.4 (1367) | 38.9 (4547) |
| ≥ 66 | 10.3 (172) | 10.8 (372) | 12 (396) | 13.8 (455) | 11.9 (1395) |
| Highest qualification achieved | |||||
| None | 2.9 (49) | 2 (69) | 11.9 (392) | 2.8 (91) | 5.1 (601) |
| GCSEs/equivalent | 5.9 (98) | 8.5 (294) | 7 (230) | 7.8 (257) | 7.5 (879) |
| A-Levels/equivalent | 12.2 (203) | 15.5 (534) | 11.9 (390) | 13.2 (436) | 13.4 (1563) |
| Undergraduate degree | 25.4 (424) | 25.5 (879) | 24.4 (803) | 24.9 (822) | 25 (2928) |
| Post-graduate degree | 50.1 (836) | 41 (1413) | 40.6 (1336) | 42.2 (1392) | 42.5 (4977) |
| Transport used | |||||
| Walk/Bike | 27.9 (466) | 21.5 (741) | 22.4 (737) | 20.7 (684) | 22.5 (2628) |
| Personal transporta | 43.1 (719) | 51.6 (1778) | 50.9 (1674) | 53.9 (1780) | 50.8 (5951) |
| Public transport | 28.2 (470) | 26.5 (913) | 26.3 (866) | 25 (824) | 26.3 (3073) |
| Other | 0.8 (14) | 0.3 (11) | 0.5 (15) | 0.4 (13) | 0.5 (53) |
| Risk factor | |||||
| Children in household | 28.5 (476) | 32.4 (1114) | 33.2 (1092) | 31.5 (1038) | 31.8 (3720) |
| Smokers | 9.3 (155) | 9.3 (320) | 7 (230) | 6.8 (225) | 8 (930) |
| Vaccinated for Flu | 40 (667) | 34.5 (1188) | 36.1 (1189) | 38.4 (1266) | 36.8 (4310) |
| Asthma | 10.2 (170) | 10.8 (371) | 10.1 (332) | 10.3 (340) | 10.4 (1213) |
| Allergies | 37.6 (628) | 36.5 (1257) | 38.9 (1279) | 39 (1289) | 38 (4453) |
| Diabetes | 2.8 (47) | 3.6 (123) | 2.8 (91) | 3 (98) | 3.1 (359) |
| Chronic Lung Disease | 0.9 (15) | 1.1 (38) | 1 (34) | 0.9 (30) | 1 (117) |
| Heart Disease | 3.8 (64) | 3.8 (130) | 4.2 (138) | 3.9 (129) | 3.9 (461) |
| Renal Disease | 0.4 (6) | 0.3 (11) | 0.2 (6) | 0.4 (13) | 0.3 (36) |
| Immunodeficiency | 1 (17) | 1.7 (59) | 1.2 (39) | 1.8 (59) | 1.5 (174) |
ae.g. car or motorbike