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Table 1 Three levels of risk scores: Variables included and their respective weights

From: Chlamydia and gonorrhoea in pregnant Batswana women: time to discard the syndromic approach?

Variables included   Sociodemographic score Clinical score Microscopy score
   Weight* Weight Weight
Sociodemographic factors     
   Age <20 21 24 24
  20–29 13 14 14
  30+ 0 0 0
   Education Primary school 10 12 11
  Junior secondary school 6 7 6
  Senior secondary or higher 0 0 0
   Length of relationship 1 year or less 5 - -
  Between 1 and 2 years 2 - -
  2 years and more 0 - -
   Marital status Unmarried 12 - -
  Married 0 - -
Clinical factors     
   Amount of discharge Moderate/profuse - 2 2
  Scarce - 0 0
   Thin/runny discharge Yes - 8 8
  No - 0 0
   Smelly discharge Yes - 5 4
  No - 0 0
   Cervix abnormal Yes - 3 2
  No - 0 0
Microscopy results     
   White blood cell count in cervical smear 3–4+ - - 14
  2+ - - 10
  1+ - - 7
  No/few - - 0
Cut-off at 40% sensitivity   Score >32 Score >28 Score >36
Cut-off at 70% sensitivity   Score >30 Score >21 Score >29
  1. *The log of the OR from the correspondent multiple logistic regression analysis for each of the variables, multiplied by 10 and rounded to the nearest whole number