Table 2 Logistic regression model results for declining further specimen uses among captured SWOG trials 2000–2024.

From: Biobanking and consent to future biospecimen use among adults enrolled in SWOG trials from 2000 to 2024

Variable

Univariate odds ratio (95% confidence interval); p-value

Multivariable odds ratio (95% confidence interval); p-value

Race (ref = White/Caucasian)

 Asian

2.98 (1.94–4.56); <0.001

3.29 (2.04–5.30); <0.001

 African American

0.46 (0.27, 0.81); 0.006

0.5 (0.26–0.97); 0.041

 Hawaiian/Pacific Islander

5.44 (1.96–14.09); 0.001

10 (3.19–31.35); <0.001

 Native American/Alaskan

1.38 (0.47–4.11); 0.56

2.1 (0.67–6.62); 0.20

Ethnicity (ref = not Hispanic)

 Hispanic

1.14 (0.77–1.69); 0.51

2.18 (1.4–3.4); <0.001

Disease status at treatment (ref = newly diagnosed)

 Relapsed/refractory disease

0.43 (0.19–0.99); 0.047

0.76 (0.29–2.01); 0.58

Age in years at study registration

1.03 (1.03–1.04); <0.001

1.03 (1.03–1.04); <0.001

Male gender (ref = female)

0.98 (0.81–1.19); 0.83

0.86 (0.69–1.06); 0.15

Diagnosis (ref = AML)

 ALL

0.76 (0.50–1.16); 0.20

3.82 (2.01–7.26); <0.001

 CLL

1.71 (1.01–2.90); 0.045

2.10 (1.07–4.12); 0.031

 CML

2.25 (1.74, 2.90); <0.001

3.13 (2.35–4.16); <0.001

 APL

0.28 (0.12–0.64); 0.0025

0.45 (0.19–1.04); 0.062

 MDS

3.34 (2.55.4.36); <0.001

2.92 (2.13–4.01); <0.001

Trial design (ref = randomized)

 Single-arm

2.67 (1.98–3.61); <0.001

4.46 (2.85–6.97); <0.001

Clinical trial eligibility (ref = eligible)

 Not eligible

1.02 (0.61, 1.73); 0.93

1.07 (0.62–1.86); 0.80

Registration study year (per year)

1.00 (0.98–1.02); 0.83

0.96 (0.93–0.98); 0.0026

  1. Table 2 describes the univariate and multivariate odds ratio with 95% confidence intervals from the logistic regression models for declining future specimen use among captured Southwest Oncology Group (SWOG) trials from 2000 to 2024.