Table 2.
Adulthood phenotypic differences between the pre- and post-reform cohorts
|
Phenotype
(study baseline) |
Pre-reform (N = 2592) | Post-reform (N = 4064) | Heterogeneity |
|---|---|---|---|
| Left school at age 16 years the year before reform | Left school at age 16 years the year after reform | P-value | |
| BMI: mean (SD) | 27.9 (5.0) | 28.0 (5.0) | 0.40 |
| Smoking pack-years: mean (SD) | 21.8 (15.3) | 23.7 (17.1) | 0.0095 |
| SBP: mean (SD) | 136.6 (18.0) | 136.2 (18.0) | 0.35 |
| Townsend deprivation index: mean (SD)a | –1.33 (3.0) | –0.93 (3.1) | 2.6 × 10–7 |
| Household income (% with >£18 000) | 83.2% | 80.5% | 0.0080 |
| Glasses wearingb (yes/no) | 90.2% | 88.0% | 0.0051 |
a
A greater score implies a greater degree of deprivation.
b
Includes contact lenses.
BMI, body mass index; SBP, systolic blood pressure.