Table 4.

Number of biospecimens provided and rates of donation by biospecimen type at baseline and follow-up among rural Latina breast cancer survivors (N = 103), California, 2016–2018.

BaselineSix-month follow-up
TotalEl Centro, CAVisalia, CATotalEl Centro, CAVisalia, CA
Number of biospecimens providedN (%)n (%)n (%)N (%)n (%)n (%)
0 of the 3 types of biospecimens0 (0)0 (0)0 (0)15 (15)7 (14)8 (15)
Only 1 of 3 types of biospecimens10 (10)9 (18)1 (2)9 (9)8 (16)1 (2)
Only 2 of 3 types of biospecimens42 (41)32 (64)10 (19)26 (25)22 (44)4 (8)
All 3 of 3 types of biospecimens51 (50)9 (18)42 (79)53 (51)13 (26)40 (75)
Total103 (100)50 (100)53 (100)103 (100)50 (100)53 (100)
Rate of donation by type of biospecimenN (%a)n (%a)n (%a)N (%a)n (%a)n (%a)
Saliva for CARb92 (89)41 (82)51 (96)78 (76)34 (68)44 (83)
Hair for HCC54 (52)11 (22)43 (81)57 (55)15 (30)42 (79)
Saliva for TL via DNA from cheek cells101 (98)48 (96)53 (100)85 (83)42 (84)43 (81)
  • aPercentage of total sample (N = 103) or site subsample (n = 50 for El Centro and 53 for Visalia) at baseline.

  • bRequires 3 samples per day for 3 days (9 samples total).