75% (217 vs. 124) increase () compared to first 6-month interval from previous year. No significant increases in geographically adjoining zip codes during the same period.
64% (126 vs. 77) increase () compared to previous year.
Robbins et al. [36] (computer-tailored intervention)
Likelihood of considering donating blood
Immediate
More likely to consider after completing the program (t (149) = 3.56, ,d = 0.29).
Units of blood from African American and Hispanic or Latino American
Up to 14 months (during active recruitment period)
Incremental increase of 1,574 African American and Hispanic or Latino American units. 15% were rare blood donors, compared with 4% of typical NYBC drives.
Nearly three-quarters, compared with 17% of NYBC drive donors.
Total of 92 individuals of Comorian origin volunteered for blood donation (no reported comparison period, control group, or size of population exposed to intervention).
NR
Price et al. [42] (repeated blood drives at churches)
Percentage of first-time blood donors
Immediate
NA
60% (428 of 699), compared with 12.2% (21,516 of 175,818) for the area ()