Table 1.
Final classification of individuals in the analytical dataset
| Classification | N (%) | Description |
|---|---|---|
| Group Comparison 1 | ||
| HIGH HIGH HIGH STAY | 5,171(25.9%) | Resided in the same census tract at time of birth, lead testing, and standardized testing, and census tract classified as high NDI (high deprivation) |
| HIGH HIGH HIGH MOVE | 11,537 (57.8%) | Moved between only high deprivation census tracts across birth, lead testing, and standardized testing |
| HIGH HIGH LOW | 2,398 (12.0%) | Moved from high deprivation census tracts at birth and lead testing to low deprivation tract at time of standardized testing |
| HIGH LOW LOW | 849 (4.3%) | Moved from high deprivation census tract at birth to low deprivation tract at time of lead and standardized testing |
| Total | 19,955 (100%) | |
| Group Comparison 2 | ||
| LOW LOW LOW STAY | 2,603 (14.4%) | Resided in the same census tract at time of birth, lead testing, and standardized testing, and census tract classified as low NDI (low deprivation) |
| LOW LOW LOW MOVE | 10,620 (58.9%) | Moved between only low deprivation census tracts across birth, lead testing, and standardized testing |
| LOW LOW HIGH | 2,956 (16.4%) | Moved from low deprivation census tracts at birth and lead testing to high deprivation tract at time of standardized testing |
| LOW HIGH HIGH | 1,848 (10.3%) | Moved from low deprivation census tract at birth to high deprivation tract at time of lead and standardized testing |
| Total | 18,027 (100%) | |