Trachoma prevalence and age-specific prevalence of anti-Pgp3 antibodies from Lower River Region and Upper River Region, The Gambia – Data Codebook

Persistent identifier

10.17037/DATA.00005348

Description

Dataset containing individual-level information on 1,800 study participants examined for trachoma and serology at health centres in The Gambia. Variables include non-identifiable demographic information on each participant (age, gender, ethnicity, geographic region and clinical data generated from a Pgp3-specific ELISA (enzyme-linked immunosorbent assay).

Data Codebook

The dataset contains 24 variables outlined below.

Variable Name Variable Label Answer Label Answer Code Variable Type
blood_card_number The clinical sample ID for the participant Open ended   String
normalised_od The Pgp3-specific ELISA value, read at 450nm, of the sample Open ended   Numeric
od_3sd Sample considered negative/positive when threshold was set using a finite mixture model at 3 standard deviations of the negative population     Numeric
    Negative 0  
    Positive 1  
od_4sd Sample considered negative/positive when threshold was set using a finite mixture model at 4 standard deviations of the negative population     Numeric
    Negative 0  
    Positive 1  
gender Participant gender     String
    Female F  
    Male M  
ethnicity Participant ethnicity     String
    Fula Fula  
    Mandinka Mandinka  
    Manjago Manjago  
    Sarahule Sarahule  
    Serer Serer  
    Wolof Wolof  
age_in_years Participant age     Numeric
right_eye_tf Clinical examination of the right eye for trachomatous inflammation-follicular (TF)     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
right_eye_ti Clinical examination of the right eye for trachomatous inflammation-intense (TI)     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
right_eye_ts Clinical examination of the right eye for trachomatous scarring (TS)     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
right_eye_tt Clinical examination of the right eye for trachomatous trichiasis (TT)     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
right_eye_co Clinical examination of the right eye for corneal opacity (CO)     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
left_eye_tf Clinical examination of the left eye for trachomatous inflammation- follicular     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
left_eye_ti Clinical examination of the left eye for trachomatous inflammation- intense     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
left_eye_ts Clinical examination of the left eye for trachomatous scarring     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
left_eye_tt Clinical examination of the left eye for trachomatous trichiasis     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
left_eye_co Clinical examination of the left eye for corneal opacity     String
    No No  
    Yes Yes  
    Uncertain Uncertain  
any_tf Presence of any  trachomatous inflammation-follicular (TF) in one or both eyes     Numeric
    No 0  
    Yes 1  
any_ti Presence of any trachomatous inflammation (TI) in one or both eyes     Numeric
    No 0  
    Yes 1  
any_ts Presence of any trachomatous scarring (TS) in one or both eyes     Numeric
    No 0  
    Yes 1  
any_tt Presence of any trachomatous trichiasis (TT) in one or both eyes     Numeric
    No 0  
    Yes 1  
any_co Presence of any corneal opacity (CO) in one or both eyes     Numeric
    No 0  
    Yes 1  
region River region     Numeric
    Lower river region 1  
    Upper river region 2  
age_recode Recoded ages     Numeric
    1 to 19 0  
    10 to 19 1  
    20 to 29 2  
    30 to 39 3  
    40 and older 4