Effects of block group spatial accessibility to mammography service and socioeconomic (SES) deprivation on risk of late-stage breast cancer.

Model I was adjusted for age only; Model II was adjusted for age and race; Model III included spatial accessibility score, socioeconomic score, age and race.*Higher spatial accessibility and less deprivation were set as references;a: shortest travel time (minutes);b: average travel time to the nearest five facilities (minutes);c: service density;d: spatial accessibility index from the model without weighting parameter;e: spatial accessibility index from the model with continuous weighting parameter;f: spatial accessibility index from the zonal weighted model with 3 time zones and quick decay weighting;g: spatial accessibility index from the zonal weighted model with 3 time zones and slow decay weighting;h: spatial accessibility index from the zonal weighted model with 6 time zones and quick decay weighting;i: spatial accessibility index from the zonal weighted model with 6 time zones and slow decay weighting.