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Table 2 Fitted model parameters

From: Developing a realistic sexual network model of chlamydia transmission in Britain

Parameter

Best fit or estimated value

Limits of 95% CI

Range (increment)

Source

Behavioural parameters

    

Proportion that switch from desiring short to long partnerships per year

   

Fitted to Natsal 2000 [19]

   Men

0.04

0.02–0.06

0.0–0.08

 

   Women

0.08

0.06–0.08

0.04–0.12 (0.02)

 

Initial proportion of 16 year olds desiring short partnerships

   

Fitted to Natsal 2000 [19]

   Men

0.6

0.5–0.7

0.4–0.8

 

   Women

0.5

0.4–0.6

0.3–0.7 (0.1)

 

Mean duration in days of long partnerships (16 year olds)

900

  

Based on exploratory fitting to Natsal 2000 [19]

Increase in partnership duration per year, in days

200

  

Based on exploratory fitting to Natsal 2000 [19]

Infection parameters

    

Transmission probability per sex act

0.0375

0.035–0.04

0.035–0.05 (0.0025)

Fitted to Natsal 2000 [19] & Adams et al [1]

Proportion seeking treatment

   

Fitted to Natsal 2000 [19] & Adams et al [1]

   Men

0.0

0.04–0.05

0–0.05

 

   Women

0.045

0–0.005

0–0.055 (0.005)

 

Health care parameters

    

Proportion of partners notified

0.2

0.1–0.25

0.0–0.5 (0.05)

Fitted to Natsal 2000 [21] & Adams et al [1]

  1. Note: Fitted parameters are presented with the limits of the 95% confidence intervals (meaning that the 95% CI lies within those limits, further refinement was not done). The range tested in the fitting routines and the increment used is also shown.