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Table 1 Baseline characteristics of SAPPHIRE participants by number of completed visits, N (%)

From: Barriers and facilitators to retaining a cohort of street-based cisgender female sex workers recruited in Baltimore, Maryland, USA: results from the SAPPHIRE study

 TotalBaseline only2 visits3 visits4 visits5 visitsχ2
p-value
Characteristicn = 250n = 34n = 19n = 46n = 48n = 103
Age, mean (SD)35.7 (9.0)33.3 (7.8)31.7 (8.0)37.1 (10.1)32.6 (8.2)37.9 (8.7)< 0.001a
Race/ethnicity0.133
 White, non-Hispanic166 (66.4)24 (70.6)13 (68.4)26 (56.5)27 (56.3)76 (73.8) 
 Black, non-Hispanic57 (22.8)6 (17.6)4 (21.1)16 (34.8)11 (22.9)20 (19.4) 
 Hispanic or other27 (10.8)4 (11.8)2 (10.5)4 (8.7)10 (20.8)7 (6.8) 
Relationship status0.050
 In a relationship/married84 (33.6)8 (23.5)3 (15.8)17 (37.0)12 (25.0)44 (42.7) 
 Single165 (66.0)26 (76.5)15 (78.9)29 (63.0)36 (75.0)59 (57.3) 
≥ 1 financial dependents95 (38.0)10 (29.4)10 (52.6)16 (34.8)24 (50.0)35 (34.0)0.157
Children < 18 living with them44 (17.6)1 (2.9)2 (10.5)9 (19.6)10 (20.8)22 (21.4)0.127
Less than high school/GED131 (52.4)18 (52.9)13 (68.4)20 (43.5)24 (50.0)56 (54.4)0.448
Homeless, past 3 months156 (62.4)24 (70.6)17 (89.5)38 (82.6)36 (75.0)41 (39.8)< 0.001
Food insecurity, past 3 month135 (54.0)17 (50.0)12 (63.2)29 (63.0)29 (60.4)48 (46.6)0.245
Arrested, past 12 months116 (46.6)18 (52.9)9 (47.4)25 (54.3)25 (53.2)39 (37.9)0.227
Experienced childhood abuse126 (52.5)21 (63.6)9 (50.0)20 (45.5)23 (48.9)53 (54.1)0.575
Daily sex work165 (66.0)26 (76.5)11 (57.9)33 (71.7)35 (72.9)60 (58.3)0.154
30+ clients in past 3 months111 (44.8)11 (32.4)9 (47.4)21 (45.7)17 (35.4)53 (52.5)0.177
Ever find clients indoors120 (48.4)16 (47.1)9 (47.4)21 (46.7)24 (51.1)50 (48.5)0.994
Ever find clients online69 (27.8)14 (41.2)7 (36.8)14 (31.1)15 (31.9)19 (18.4)0.063
Ever find clients from referrals110 (44.4)11 (32.4)8 (42.1)24 (53.3)14 (29.8)53 (51.5)0.047
Time in street-based sex work0.065
 6+ years129 (51.6)16 (47.1)5 (26.3)21 (45.7)25 (52.1)62 (60.2) 
  ≤ 5 years121 (48.4)18 (52.9)14 (73.7)25 (54.3)23 (47.9)41 (39.8) 
Daily non-injection drug useb186 (74.4)28 (82.4)10 (52.6)36 (78.3)35 (72.9)77 (74.8)0.179
Daily injection drug use146 (58.4)28 (82.4)11 (57.9)26 (56.5)28 (58.3)53 (51.5)0.038
  1. aF-test bexcluding marijuana use