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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Epidemiology. 2012 Jan;23(1):138–147. doi: 10.1097/EDE.0b013e31823ac17c

Table. Population proportions, sample proportions, and RDS-1 and RDS-2 estimates with 95% confidence intervals (CIs), for the full and small samples.

Respondent-driven sampling estimates are shown in bold if they are closer to the population proportion than the sample proportion. C's are shown in bold if they include the population proportion.

Population proportion (n=2402)
Full RDS sample (n=927 including seeds)
Small RDS sample (n=250 including seeds)
Sample Estimate (95% CI)
 Sample Estimate (95% CI)
RDS-1
 RDS-2
 RDS-1
 RDS-2
Age group (years) 0-19 0.020 0.004 0.005 (0.000-0.012) 0.005 (0.001-0.009) 0.000 - - - -
20-29 0.202 0.133 0.133 (0.106-0.156) 0.129 (0.109-0.159) 0.104 0.104 (0.052-0.150) 0.108 -
30-39 0.275 0.250 0.243 (0.208-0.275) 0.242 (0.215-0.279) 0.267 0.251 (0.175-0.313) 0.239 -
40-49 0.207 0.240 0.225 (0.193-0.263) 0.230 (0.194-0.257) 0.246 0.233 (0.169-0.313) 0.248 -
50+ 0.297 0.373 0.394 (0.356-0.437) 0.395 (0.351-0.429) 0.383 0.412 (0.334-0.505) 0.405 -
Tribe Ganda 0.697 0.667 0.663 (0.619-0.709) 0.661 (0.624-0.709) 0.654 0.714 (0.620-0.812) 0.662 (0.623-0.806)
Rwanda/kole 0.179 0.210 0.222 (0.182-0.261) 0.212 (0.174-0.244) 0.167 0.152 (0.084-0.220) 0.165 (0.085-0.201)
Kiga 0.018 0.021 0.016 (0.005-0.029) 0.022 (0.009-0.033) 0.038 0.011 (0.000-0.039) 0.036 (0.004-0.044)
Rundi 0.047 0.061 0.065 (0.005-0.089) 0.069 (0.046-0.089) 0.092 0.086 (0.036-0.140) 0.100 (0.039-0.133)
Othera 0.060 0.040 0.035 (0.021-0.051) 0.036 (0.025-0.054) 0.050 0.037 (0.010-0.073) 0.038 -
Religion Catholic 0.598 0.624 0.640 (0.595-0.684) 0.645 (0.597-0.685) 0.733 0.740 (0.659-0.812) 0.752 (0.669-0.816)
Protestant 0.170 0.171 0.151 (0.121-0.182) 0.153 (0.131-0.188) 0.100 0.086 (0.046-0.133) 0.085 (0.051-0.126)
Muslim 0.227 0.202 0.207 (0.166-0.249) 0.198 (0.159-0.233) 0.158 0.170 (0.099-0.250) 0.155 (0.098-0.228)
Otherb 0.005 0.003 0.003 (0.000-0.008) 0.004 - 0.008 0.004 (0.000-0.014) 0.008 -
Socioeconomic status Highest 0.257 0.179 0.167 (0.136-0.200) 0.170 (0.141-0.200) 0.200 0.190 (0.120-0.271) 0.188 (0.135-0.269)
Higher 0.249 0.242 0.231 (0.197-0.266) 0.238 (0.207-0.270) 0.258 0.242 (0.174-0.314) 0.247 (0.186-0.314)
Lower 0.229 0.275 0.266 (0.233-0.300) 0.269 (0.238-0.302) 0.238 0.247 (0.181-0.319) 0.244 (0.179-0.302)
Lowest 0.214 0.266 0.303 (0.263-0.346) 0.290 (0.252-0.326) 0.254 0.281 (0.206-0.358) 0.284 (0.206-0.348)
Unknown 0.052 0.038 0.033 (0.019-0.047) 0.033 (0.022-0.046) 0.050 0.040 (0.011-0.069) 0.036 (0.015-0.064)
Village A 0.033 0.021 0.032 (0.001-0.096) 0.025 - 0.042 - - 0.043 -
B 0.017 0.017 0.017 (0.000-0.075) 0.017 - 0.021 - - 0.022 -
C 0.042 0.070 0.028 (0.000-0.094) 0.060 - 0.104 - - 0.073 -
D 0.033 0.047 0.019 (0.000-0.052) 0.040 - 0.017 - - 0.014 -
E 0.027 0.027 0.072 (0.011-0.259) 0.025 - 0.000 - - - -
F 0.067 0.016 0.013 (0.000-0.026) 0.013 - 0.013 - - 0.007 -
G 0.025 0.028 0.012 (0.000-0.059) 0.030 - 0.050 - - 0.046 -
H 0.031 0.010 0.004 (0.000-0.052) 0.012 - 0.021 - - 0.024 -
I 0.060 0.045 0.047 (0.000-0.144) 0.042 - 0.008 - - 0.005 -
J 0.028 0.034 0.014 (0.000-0.111) 0.045 - 0.075 - - 0.090 -
K 0.031 0.045 0.060 (0.007-0.232) 0.037 - 0.000 - - - -
L 0.040 0.047 0.026 (0.006-0.082) 0.056 - 0.071 - - 0.082 -
M 0.026 0.033 0.016 (0.004-0.052) 0.035 - 0.071 - - 0.066 -
N 0.033 0.038 0.030 (0.007-0.074) 0.041 - 0.038 - - 0.041 -
O 0.049 0.062 0.026 (0.004-0.073) 0.067 - 0.079 - - 0.081 -
P 0.034 0.023 0.024 (0.000-0.057) 0.020 - 0.021 - - 0.016 -
Q 0.086 0.047 0.034 (0.001-0.067) 0.041 - 0.025 - - 0.019 -
R 0.038 0.055 0.061 (0.003-0.151) 0.045 - 0.013 - - 0.015 -
S 0.038 0.038 0.107 (0.002-0.266) 0.040 - 0.071 - - 0.055 -
T 0.050 0.061 0.147 (0.002-0.367) 0.060 - 0.046 - - 0.048 -
U 0.050 0.065 0.064 (0.000-0.161) 0.064 - 0.042 - - 0.051 -
V 0.039 0.045 0.034 (0.000-0.318) 0.043 - 0.017 - - 0.022 -
W 0.040 0.033 0.054 (0.001-0.273) 0.028 - 0.004 - - 0.002 -
X 0.043 0.035 0.030 (0.000-0.126) 0.033 - 0.004 - - 0.005 -
Y 0.041 0.059 0.030 (0.000-0.124) 0.082 - 0.150 - - 0.175 -
Number of sex partners in last year 0 0.113 0.148 0.170 (0.136-0.206) 0.161 (0.133-0.190) 0.133 0.142 (0.087-0.203) 0.139 (0.095-0.192)
1 0.419 0.577 0.572 (0.534-0.609) 0.574 (0.537-0.611) 0.558 0.573 (0.498-0.652) 0.571 (0.502-0.648)
2-3 0.114 0.140 0.125 (0.099-0.154) 0.128 (0.104-0.151) 0.163 0.147 (0.091-0.207) 0.141 (0.093-0.189)
4+ 0.037 0.035 0.039 (0.021-0.059) 0.040 (0.024-0.056) 0.033 0.029 (0.006-0.058) 0.036 (0.011-0.065)
Unknown 0.316 0.100 0.094 (0.069-0.122) 0.098 (0.077-0.122) 0.113 0.108 (0.054-0.174) 0.113 -
HIV status Positive 0.063 0.079 0.075 (0.054-0.097) 0.074 (0.054-0.096) 0.075 0.075 (0.032-0.126) 0.078 (0.033-0.124)
Negative 0.600 0.817 0.820 (0.794-0.848) 0.820 (0.790-0.846) 0.813 0.821 (0.763-0.872) 0.818 (0.758-0.874)
Unknown 0.337 0.105 0.104 (0.082-0.128) 0.106 (0.084-0.132) 0.113 0.104 (0.065-0.153) 0.105 (0.064-0.156)
Closer to target Within CI Closer to target Within CI Closer to target Within CI Closer to target Within CI
Number of comparisons 52 52 52 26 26 26 49 19
Number met criteria 19 36 17 13 8 18 18 14
% met criteria 37% 69% 33% 50% 31% 69% 37% 74%
a

Includes other known tribe and unknown tribe.

b

Includes other known religion, no religion, and unknown religion.

- indicates estimate that could not be calculated because subgroups were recruited exclusively from within themselves or because (excluding seeds) no one was recruited from certain subgroups.