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. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: Contemp Clin Trials. 2021 Feb 8;103:106314. doi: 10.1016/j.cct.2021.106314

Table 3.

Comparison of participants connections to others who smoke across recruitment strategies.

Facebook Google Research Match Smokefree.gov Peer recruitment
n = 362 n = 100 n = 251 n = 83 n = 195
Does anyone else living in your home smoke cigarettes?
n (%) n (%) n (%) n (%) n (%)
No 250 (69.1%)* 65 (65.0%)* 130 (51.8%) 48 (57.8%)* 87 (44.6%)
Yes 112 (30.9%) 35 (35.0%) 121 (48.2%) 35 (42.2%) 108 (55.4%)
M (SD) Med (IQR) M (SD) Med (IQR) M (SD) Med (IQR) M (SD) Med (IQR) M (SD) Med (IQR)
Connections to others who smoke
Immediate family 1.5 (2.0)^ 1 (2) 2.1 (2.4) 1(3) 1.5 (1.8)^ 0 (1) 1.7 (2.1)* 0 (1) 2.6 (2.6) 2 (3)
Extended family 2.9 (5.5) 1 (4) 3.9 (5.3) 2 (6) 2.7 (3.4)^ 0 (2) 3.7 (6.6) 2 (5) 3.7 (4.0) 3 (5)
Close friends, with whom you feel at ease and discuss private matters 2.2 (3.1)^ 1 (3) 3.7 (4.9) 2 (3) 2.7 (2.7)^ 2 (3) 2.4 (2.3)^ 2 (3) 3.5 (3.7) 3 (4)
Friends, with whom you feel at ease but DO NOT discuss private matters 3.3 (6.7) 2 (5) 4.3 (6.0) 2 (6) 3.9 (8.4) 2 (5) 2.4 (3.3)* 1 (3) 3.8 (6.0) 2 (5)
Acquaintances, to whom you may say hello but about whom you know little1 7.4 (14.9) 2 (9) 8.8 (16.0) 3 (10) 6.0 (12.0) 2 (6) 5.0 (12.9) 1 (5) 8.5 (19.4) 2 (8)
Co-workers1 3.5 (10.4) 0 (3) 3.5 (4.5)* 1 (5) 2.7 (7.5) 0 (3) 3.9 (7.5) 1 (4) 4.3 (9.4) 2 (5)
*

p-value less than 0.05 (peer recruitment as comparison group)

^

p-value<0.01 (peer recruitment as comparison group)

^1

Maximum value limited to 100

M=Mean; SD=Standard Deviation; Med=Median; IQR=Interquartile Range