Table 1 Selected feasibility aspects of nasal and oropharyngeal swabbing.

From: Determination of nasal and oropharyngeal microbiomes in a multicenter population-based study – findings from Pretest 1 of the German National Cohort

Column 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
  Nasal swabs collected by study personnel at the study center Oropharyngeal swabs collected by study personnel at the study center Nasal swabs collected by study participants at home
Study centers Sample size n No. of partici-pants from whom swabs were collected n Time needed for swabbing in minutes median (range) Difficul-ties when collecting the swab % of “No” responses Swabs from both nares were taken % of “Yes” responses Swabs that had to be discarded % of „None“ responses Sample size n No. of partici-pants from whom swabs were collected n (%) No. of partici-pants who refused oropha-ryngeal swabbing n (%) Time needed for swabbing in minutes median (range) Difficul-ties when collecting the swab % of “Yes” responses (n/N) No. of partici-pants to whom swabs were sent n No. of partici-pants from whom swabs were received n (%) Time from mailing of the swab kit to swabbing (days) Median (range) Time from swabbing to swab receipt in the lab (days) Median (range)
Augsburg 100 100 1 (<1–6) 100 100 100
Bremen 96 95 3 (1–10) 98 100 100 95 81 (85) 14 (15) 2 (<1–5) 68 (54/79) 94 83 (88) 8 (2–63) 1 (1–13)
Essen 75 75 3 (<1–7) 95 100 100 75 73 (97) 2 (2.7) 2 (1–4) 42 (29/69)
Freiburg 97 96 2 (1–5) 98 98 100 98 69 (70) 11 (4–44) 1 (1–30)
Hamburg 100 100 2 (<1–5) 98 99 100 100 99 (99) 1 (1.0) 1 (<1–12) 53 (52/99) 100 75 (75) 8 (2–66) 2 (1–30)
Heidelberg 56 56 2 (<1–5) 100 100 98 56 56 (100) 0 (0) 1 (<1–6) 36 (20/56)