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Table 5 Higher quality mammography imaging and breast cancer stage atdiagnosis (N = 210 images prior to the index image with completedata on covariates)

From: Mammogram image quality as a potential contributor to disparities in breastcancer stage at diagnosis: an observational study

Β 

OR (95% CI)

P-value

All 7 image quality indicators1

0.91 (0.80, 1.03)

0.14

Technologist-associated

Β Β 

 Sum of all 3 indicators1

0.80 (0.65, 0.99)

0.04

 Positioning

0.83 (0.49, 1.42)

Β 

 Compression

0.50 (0.29, 0.86)

0.01

 Sharpness

0.54 (0.31, 0.92)

0.02

Machine-associated

Β Β 

 All 4 indicators1

0.96 (0.76, 1.22)

Β 

 Contrast

0.93 (0.50, 1.75)

Β 

 Exposure

1.03 (0.49, 2.15)

Β 

 Noise

0.53 (0.17, 1.61)

Β 

 Artifacts

0.98 (0.48, 1.99)

Β 
  1. Higher quality mammography imaging defined as a score of good orexcellent for a given image quality indicator. 1 Thenumber of indicators in the set that were scored as being of good orexcellent quality. Odds ratios are from ordinal logistic regressionmodels adjusted for age, race/ethnicity, income, education, privatehealth insurance status, film type and facility type (academicmedical center vs. other). P-values > 0.2 aresuppressed.