Table 2. Characteristics of 12,136 pupils that sat Key Stage tests in 2002 to 2005.
| School attainment data | variable | n | %/SD/range |
| number of pupils with results only for | KS 1 | 4074 | (33.6%) |
| KS 2 | 3720 | (30.7%) | |
| KS 3 | 3360 | (27.7%) | |
| number of pupils that took two KS tests | KS 1 & 2 | 16 | (0.1%) |
| KS 2 & 3 | 966 | (8.0%) | |
| attainment (English): mean (SD) | KS 1 | 13.7 | (4.0) |
| KS 2 | 52.5 | (18.1) | |
| KS 3 | 34.9 | (17.8) | |
| attainment (Maths): mean (SD) | KS 1 | 15.2 | (4.0) |
| KS 2 | 60.7 | (21.9) | |
| KS 3 | 66.9 | (23.8) | |
| attainment (overall): mean (SD) | KS 1 | 14.2 | (3.7) |
| KS 2 | 56.0 | (16.0) | |
| KS 3 | 60.8 | (18.7) | |
| special educational needs (at KS) | KS 1 | 807 | (19.7) |
| KS 2 | 1,117 | (23.8) | |
| KS 3 | 971 | (22.4) | |
| Clinical data | |||
| asthma diagnosis (ever) | 2,206 | (18.2%) | |
| asthma treatment | inactive | 1,125 | (9.3%) |
| active | 946 | (7.8%) | |
| bronchodilators: 50th (10th–90th) centiles | 3 months† | 1.8 | (1.3 to 3.6) |
| 12 months‡ | 3.4 | (1.4 to 8.0) | |
| BTS Step in 2005 | 1 | 767 | (6.7%) |
| 2 | 450 | (3.9%) | |
| 3+ | 153 | (1.3%) | |
| comorbidites | any atopic disease | 3,483 | (28.7%) |
| allergic rhinitis | 1,266 | (10.4%) | |
| eczema | 2,592 | (21.4%) | |
| mental health problems | 521 | (4.3%) | |
| diabetes | 19 | (0.2%) | |
| smoking household | yes | 6,679 | (55.0%) |
| 1 smoker | 4,474 | (67.0%) | |
| 2 smokers | 1,572 | (23.5%) | |
| 3+ smokers | 633 | (9.5%) | |
| Socio demographic data | |||
| Sex | males: | 6,091 | (50.2%) |
| ethnicity | White/NA | 3,216 | (26.5%) |
| Bangladeshi | 7,126 | (58.7%) | |
| other | 1,794 | (14.8%) | |
| Council Tax band* | A: ≤£40 k | 29 | (0.3%) |
| B: >£40 k to ≤£52 k | 2,533 | (21.6%) | |
| C: >£52 k to ≤£68 k | 5,856 | (49.9%) | |
| D: >£68 k to ≤£88 k | 1,392 | (11.9%) | |
| E: >£88 k to ≤£120 k | 1,314 | (11.2%) | |
| F: >£120 k to ≤£160 k | 544 | (4.6%) | |
| G: >£160 k to ≤£320 k | 67 | (0.6%) | |
| H: >£320 k | 0 | (0%) | |
| in receipt of benefits | 8,646 | (71.2%) | |
| living in social housing | 8,188 | (67.5%) | |
| one adult household | 1,370 | (11.3%) | |
| free school meals | 7,607 | (62.7%) |
KS 1 sat aged 7, KS 2 sat aged 11, KS 3 sat aged 14.
SD = standard deviation.
range = 10th to 90th percentile.
BTS = British Thoracic Society.
active asthma = bronchodilator in period 12 months before Key Stage test.
inactive asthma = no bronchodilator in period 12 months before Key Stage test.
†
= in period 3 m prior to KS test.
‡
= in period 12 m prior to KS test.
*
Council Tax band based on property valuation on 1st April 1991.
NA = not available.