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Table 2 Retention in the early and later phases by socio-demographics characteristics

From: A randomized trial to assess retention rates using mobile phone reminders versus physical contact tracing in a potential HIV vaccine efficacy population of fishing communities around Lake Victoria, Uganda

Characteristics Intensive Early Phase   Later Phase  
4/4 n (%) < 4/4 n (%) P value 2/2 n (%) < 2/2 n (%) P value
All Participants 425 (64.3) 236 (35.7)   497 (75.2) 164 (24.8)  
Study Arm
 Phone tracing 215 (65.2) 115 (34.8)   232 (70.3) 98 (29.7)  
 Physical contact tracing 210 (63.4) 121 (36.6) 0.647 265 (80.1) 66 (19.9) 0.004
Sex
 Female 171 (66.3) 87 (33.6)   198 (76.7) 60 (23.3)  
 Male 254 (63.0) 149 (37.0) 0.395 299 (74.2) 104 (25.8) 0.459
Age group
 15–19 25 (51.0) 24 (49.0)   130 (74.3) 45 (25.7)  
 20–24 121 (69.1) 54 (30.9)   35 (71.4) 14 (28.6)  
 25–34 201 (62.8) 119 (27.2)   235 (73.4) 85 (26.6)  
 35–49 78 (66.7) 39 (33.3) 0.105 97 (82.9) 20 (17.1) 0.194
Location of Community
 Mainland 202 (57.2) 151 (42.8)   274 (77.6) 79 (22.1)  
 Island 223 (72.4) 85 (27.6) < 0.0001 223 (72.4) 85 (27.6) 0.121
Occupation
 Fishing/Fishing related† 175 (64.8) 95 (35.2)   199 (73.7) 71 (26.3)  
 Shop/Market 34 (73.9) 12 (26.1)   36 (78.3) 10 (21.7)  
 Bar/Lodge/Hotel 42 (60.0) 28 (40.0)   50 (71.4) 20 (28.6)  
 Farming 52 (71.2) 21 (28.8)   56 (76.7) 17 (23.3)  
 Housewife 40 (60.6) 26 (39.4)   52 (78.8) 14 (21.2)  
 Others†† 82 (60.3) 54 (39.7) 0.378 104 (76.5) 32 (23.5) 0.882
Marital status
 Not married 129 (61.7) 80 (38.3)   144 (68.9) 65 (31.1)  
 Married monogamous 208 (64.0) 117 (36.0)   250 (76.9) 75 (23.1)  
 Married polygamous 88 (69.3) 39 (30.7) 0.369 103 (81.1) 24 (18.9) 0.026
Education
 None 16 (47.1) 18 (52.9)   27 (79.4) 7  
 Primary 245 (64.6) 134 (35.4)   286 (75.5) 93  
 Secondary or beyond 164 (66.1) 84 (33.9) 0.091 184 (74.2) 64 0.790
Religion
 Catholic 163 (63.7) 93 (36.3)   198 (77.3) 58 (22.7)  
 Protestant/Anglican 107 (62.9) 63 (37.1)   130 (76.5) 40 (23.5)  
 Muslim 96 (65.8) 50 (34.2)   107 (73.3) 39 (26.7)  
 Pentecostal/Adventist 59 (66.3) 30 (33.7) 0.926 62 (69.7) 27 (30.3) 0.470
Ethnicity/Tribe
 Baganda 217 (66.8) 108 (33.2)   254 (78.2) 71 (21.8)  
 Others 208 (61.9) 128 (28.1) 0.192 243 (72.3) 93 (27.7) 0.083
Duration in community at enrolment (years)
 Less than 2 46 (54.1) 39 (45.9)   49 (57.7) 36 (42.3)  
 2–4 159 (61.4) 100 (38.6)   182 (70.3) 77 (29.7)  
 5–10 129 (67.2) 63 (32.8)   160 (83.3) 32 (16.7)  
 More than 10 91 (72.8) 34 (27.2) 0.024 106 (84.8) 19 (15.2) < 0.0001
  1. †Fishing, fishmongers, fish processing, boat maker/owner
  2. ††Construction/Mechanic/Government/Clerical