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. 2023 Mar 20;288:79–86. doi: 10.1016/j.jss.2023.02.021

Table 2.

Multinomial logistic regression: Relative risk of higher clinical stage breast cancer.

Factor Stage 1
P value Stage 2
P value Stage 3 or 4
P value
RRR (95% CI) RRR (95% CI) RRR (95% CI)
Post-COVID-19 1 (0.68-1.46) 0.988 0.86 (0.51-1.45) 0.567 0.89 (0.51-1.45) 0.702
Demographic
 Age (per year increase) 1.04 (1.02-1.06) 0.001 1 (0.97-1.02) 0.77 1 (0.97-1.02) 0.974
Race
 White Ref. -- Ref. -- Ref. --
 Black 0.52 (0.26-1.02) 0.056 0.73 (0.29-1.85) 0.502 0.95 (0.29-1.85) 0.913
 Asian 0.69 (0.26-1.82) 0.456 0.8 (0.21-3.03) 0.743 0.8 (0.21-3.03) 0.767
 Other/Unknown 1.99 (0.92-4.29) 0.08 2.5 (0.97-6.44) 0.059 1.1 (0.97-6.44) 0.862
Ethnicity
 Not Hispanic Ref. -- Ref. -- Ref. --
 Hispanic 0.55 (0.33-0.92) 0.022 0.55 (0.27-1.12) 0.099 0.69 (0.27-1.12) 0.344
 Unknown 0.63 (0.31-1.25) 0.184 0.5 (0.18-1.44) 0.2 1.26 (0.18-1.44) 0.655
Insurance
 Private Ref. -- Ref. -- Ref. --
 Medicare 0.68 (0.38-1.21) 0.19 1.07 (0.47-2.4) 0.875 1.88 (0.47-2.4) 0.167
 Medicaid 0.7 (0.33-1.49) 0.357 2.12 (0.86-5.22) 0.103 5.18 (0.86-5.22) 0.001
 Uninsured 2.3 (0.86-6.16) 0.098 8.07 (2.68-24.25) <0.001 14.52 (2.68-24.25) <0.001
 Unknown/Insurance not otherwise specified 1.2 (0.54-2.66) 0.653 0.83 (0.24-2.88) 0.775 0.78 (0.24-2.88) 0.765
Treatment characteristic
 Time to first intervention (per day increase) 1 (0.99-1) 0.156 0.98 (0.98-0.99) 0.001 0.99 (0.98-0.99) 0.018

Bold: statistically significant, P < 0.05.

CI = confidence interval; RRR = relative risk ratio.