Table 3.
Multiple logistic regression comparing change for willingness to donate and reasons or concerns about donation among Chinese American participants in a randomized controlled trial
| Factor | Intervention pre-post (n = 193) OR (95% CI) |
Control pre-post (n = 202) OR (95% CI) |
Intervention pre-post versus control pre-post (n = 395) OR (95% CI) |
P |
|---|---|---|---|---|
| If healthy, willing to donate | ||||
| Saliva | 2.2 (1.9–2.5) | 1.5 (1.1–2.2) | 1.4 (1.0–2.1) | 0.07 |
| Urine | 2.1 (1.6–2.8) | 1.3 (1.0–1.9) | 1.6 (1.0–2.4) | 0.05 |
| Blood | 1.5 (1.0–2.3) | 1.2 (0.9–1.4) | 1.3 (0.8–2.1) | 0.30 |
| Toenails | 1.8 (1.3–2.5) | 0.8 (0.7–1.1) | 2.1 (1.4–3.2) | <0.001 |
| Hair | 1.7 (1.4–2.1) | 1.0 (0.7–1.3) | 1.8 (1.3–2.5) | <0.001 |
| If have cancer, willing to donate | ||||
| Saliva | 2.5 (2.0–3.3) | 1.7 (1.2–2.4) | 1.5 (1.0–2.3) | 0.06 |
| Urine | 2.4 (1.5–3.9) | 1.1 (0.9–1.3) | 2.2 (1.3–3.7) | 0.002 |
| Blood | 1.1 (0.8–1.6) | 1.0 (0.7–1.3) | 1.2 (0.7–1.8) | 0.49 |
| Toenails | 1.9 (1.7–2.2) | 0.8 (0.8–0.9) | 2.3 (2.0–2.7) | <0.001 |
| Hair | 2.5 (1.8–3.4) | 0.9 (0.8–1.1) | 2.8 (1.9–4.0) | <0.001 |
| If have cancer, willing to donate unused tissue | 2.0 (1.4–2.8) | 1.1 (0.8–1.5) | 1.8 (1.2–2.9) | 0.01 |
| Reasons for willingness to donate | ||||
| Future generations will benefit | 2.8 (2.3–3.6) | 1.4 (1.0–1.9) | 2.0 (1.4–3.0) | <0.001 |
| A person I know would benefit | 1.4 (1.2–1.8) | 1.3 (0.8–2.0) | 1.1 (0.7–1.9) | 0.60 |
| I could be notified about abnormal results | 1.1 (0.8–1.4) | 0.6 (0.5–0.8) | 1.7 (1.2–2.3) | 0.003 |
| Samples would already be collected as part of my medical care |
1.2 (0.7–2.2) | 0.8 (0.3–1.9) | 1.5 (0.6–4.3) | 0.40 |
| Concerns about donating for cancer research | ||||
| Losing my privacy | 1.0 (0.7–1.5) | 1.3 (1.0–1.6) | 0.8 (0.5–1.3) | 0.35 |
| Being asked to donate more later | 1.0 (0.5–2.1) | 0.9 (0.5–1.5) | 1.1 (0.4–2.8) | 0.81 |
| Not knowing how my donation will be used | 0.8 (0.4–1.9) | 0.9 (0.6–1.5) | 0.9 (0.4–2.4) | 0.86 |
| Not getting medical information about my donation | 0.7 (0.5–1.1) | 1.0 (0.6–1.9) | 0.7 (0.3–1.5) | 0.34 |
| Upsetting the balance of “qi” in my body | 1.3 (0.6–2.6) | 0.9 (0.4–1.8) | 1.4 (0.5–3.9) | 0.50 |
| Not maintaining the entire body, which our parents and ancestors gave to us |
0.9 (0.5–1.7) | 0.9 (0.6–1.4) | 1.0 (0.5–2.0) | 0.92 |
NOTE: Adjusted for age, sex, marital status, education, years in the United States, family history of cancer, and personal history of cancer.
Bold P values reflect a statistical significance of P < 0.05.