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Table 1 Characteristics (at earlier round) of individuals attending i)Sero-4 and Sero-5, ii)Sero-5 and Sero-6, by VCT use at earlier round

From: The impact of voluntary counselling and testing services on sexual behaviour change and HIV incidence: observations from a cohort study in rural Tanzania

   Attended Sero4 and Sero5 Attended Sero5 and Sero6
   No VCT Had VCT Total No VCT Had VCT Total
   N (%) N (%)   N (%) N (%)  
Total   3289 (91.0) 324 (9.0) 3613 (100) 2466 (82.3) 532 (17.7) 2998 (100)
Sex Male 1228 (87.1) 182 (12.9) 1420 (100) 795 (78.5) 218 (21.5) 1013 (100)
  Female 2061 (93.6) 142 (6.4) 2203 (100) 1671 (84.2) 314 (15.8) 1985 (100)
Age 15-24 815 (92.1) 70 (7.9) 885 (100) 480 (80.8) 114 (19.2) 594 (100)
  25-34 731 (86.7) 112 (13.3) 843 (100) 549 (78.1) 154 (21.9) 703 (100)
  35-44 673 (89.4) 80 (10.6) 753 (100) 471 (77.2) 139 (22.8) 610 (100)
  > = 45 1070 (94.5) 62 (5.5) 1132 (100) 966 (88.5) 125 (11.5) 1091 (100)
HIV status Negative 3173 (91.3) 301 (8.7) 3474 (100) 2355 (82.4) 503 (17.6) 2858 (100)
  Positive 116 (83.5) 23 (16.5) 139 (100) 111 (79.3) 29 (20.7) 140 (100)
Reported previous use of VCT$* No 3046 (92.2) 258 (7.8) 3304 (100) 1667 (88.9) 208 (11.1) 1875 (100)
  Yes 243 (78.6) 66 (21.4) 309 (100) 728 (69.7) 317 (30.3) 1045 (100)
Number of sexual partners in last year None 392 (97.5) 10 (2.5) 402 (100) 490 (92.3) 41 (7.7) 531 (100)
  One 2195 (91.8) 195 (8.2) 2390 (100) 1755 (81.8) 390 (18.2) 2145 (100)
  Two or more 702 (85.5) 119 (14.5) 821 (100) 221 (68.6) 101 (31.4) 322 (100)
Marital status Never married 435 (88.8) 55 (11.2) 490 (100) 294 (81.4) 67 (18.6) 361 (100)
  Marr monogamous 1946 (90.9) 195 (9.1) 2141 (100) 1392 (80.7) 332 (19.3) 1724 (100)
  Marr polygamous 303 (91.0) 30 (9.0) 333 (100) 268 (81.2) 62 (18.8) 330 (100)
  Widowed     276 (92.9) 21 (7.1) 297 (100)
  Separated/divorced     236 (82.5) 50 (17.5) 286 (100)
  Widowed/Separated 568 (93.4) 40 (6.6) 608 (100)    
Regular non-cohabiting partner in last year$ No 2776 (92.0) 242 (8.0) 3018 (100) 2130 (83.7) 415 (16.3) 2545 (100)
  Yes 513 (86.2) 82 (13.8) 595 (100) 331 (74.2) 115 (25.8) 446 (100)
High risk partner in last year$ No 3185 (91.3) 302 (8.7) 3487 (100) 2297 (83.0) 471 (17.0) 2768 (100)
  Yes 104 (82.5) 22 (17.5) 126 (100) 157 (73.7) 56 (26.3) 213 (100)
Ever used a condom$# No 2907 (92.6) 231 (7.4) 3138 (100) 1778 (81.9) 393 (18.1) 2171 (100)
  Yes 380 (80.3) 93 (19.7) 473 (100) 133 (64.3) 74 (35.7) 207 (100)
  1. $Small numbers of missing data (<3%).
  2. *This was previous VCT use as reported at the later round (to account for any VCT use in the inter sero-survey period).
  3. βData on widowed/separated not broken down at Sero4.
  4. #At Sero5 this variable related to ever use of condoms with spouse or regular non-cohabiting partners only (N = 2,403).