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Table 1 Socio-demographic responses by ZEST study population

From: The influence of interviewers on survey responses among female sex workers in Zambia

  Univariate Bivariate regression b
N % / Median [IQR] ICCc Male
IVR
Female
IVR
p-value
Study site 965      
 Livingstone   49.7%     
 Kapiri   25.4%     
 Chirundu   24.9%     
Age 965 25 [21–30] 3.9% 26.2 26.3 0.99
Ever married 965 69.9% 12.5% 68.7% 75.5% 0.69
Currently divorced/separated 965 24.5% 10.4% 26.8% 18.4% 0.55
Education 965      0.65
 No formal education   11.2%   7.3% 11.8%  
 Primary (up to 9 years)   46.6%   44.6% 53.0%  
  > 9 years   42.2%   48.1% 35.2%  
Able to read and write 959 75.3% 9.1% 82.8% 67.7% 0.06
Monthly income (ZMW) 949      0.38
 No income   21.3%   2.6% 24.8%  
  < 250 kwacha   13.0%   9.9% 38.4%  
 251–500 kwacha   24.8%   39.1% 29.6%  
 501–1000 kwacha   25.9%   37.4% 6.2%  
 1001–1500 kwacha   7.7%   6.9% 0.6%  
  > 1500 kwacha   7.4%   4.2% 0.4%  
Financial situation 962      0.020
 Very poor   14.7%   4.8% 24.1%  
 Poor   37.8%   32.8% 54.1%  
 Just getting by   36.3%   46.5% 18.9%  
 Comfortable   10.0%   14.2% 2.6%  
 Very comfortable   1.2%   1.8% 0.3%  
Mobile phone ownership 965 85.0% 6.3% 86.4% 85.2% 0.94
Self-perceived relative SES a 965 3 [2–5]   3.1 3.0 0.94
Any income from non-sex-work 965 30.2% 7.5% 30.6% 27.3% 0.87
  1. ICC Intraclass Correlation Coefficient, IQR inter-quartile range, IVR interviewer, SES socio-economic status, ZMW Zambian Kwacha: 1 Kwacha ~US$ 10
  2. a10-point scale
  3. bAll bivariate regressions included study site fixed effects and interviewer random intercepts. Values for male and female IVR are marginal predicted values based on regression coefficients. c ICC is the proportion of all variance in a model without interviewer gender attributable to variation in interviewer identity; not available for Poisson or ordered logistic models. P-value is for a χ2 test, adjusted for multiple testing across all results shown in Tables 1, 2, 3 and 4 using the Benjamini-Hochberg method. P-values <0.05 shown in bold