See references for more details. The data is collected between 2003-2009 in Maryland, USA. This is originally from (Xie et al. 2018)
tb_clean
The object is a data frame of dimension 1137x7. Each row is a detected case of TB.
Sex of individual (F/M/Unknown)
County in Maryland of individual
Race of individual (Asian/Black or African American/White)
Smear status of individual (positive/negative/unknown)
HIV status of individual (positive/negative/unknown)
Homelessness status of individual (yes/no)
Cluster group
detection time relative to first individual in cluster
Xie YL, Cronin WA, Proschan M, Oatis R, Cohn S, Curry SR, Golub JE, Barry III CE, Dorman SE (2018). “Transmission of Mycobacterium tuberculosis From Patients Who Are Nucleic Acid Amplification Test Negative.” Clinical Infectious Diseases, 67(11), 1653--1659.
head(tb_clean)#> # A tibble: 6 x 8 #> # Groups: group [1] #> sex county race spsmear hivstatus homeless group rel_time #> <chr> <chr> <chr> <chr> <fct> <chr> <chr> <dbl> #> 1 Male "BALTIMORE … Black or Afric… "Negati… pos Yes 2 375 #> 2 Male "BALTIMORE … Black or Afric… "Negati… pos Yes 2 1085 #> 3 Male "" Black or Afric… "" unk Yes 2 1357 #> 4 Male "BALTIMORE … Black or Afric… "Positi… pos Yes 2 1002 #> 5 Female "BALTIMORE … Black or Afric… "Negati… neg No 2 1385 #> 6 Male "BALTIMORE … Black or Afric… "Negati… pos Yes 2 1029summary(tb_clean)#> sex county race spsmear #> Length:389 Length:389 Length:389 Length:389 #> Class :character Class :character Class :character Class :character #> Mode :character Mode :character Mode :character Mode :character #> #> #> #> hivstatus homeless group rel_time #> neg:272 Length:389 Length:389 Min. : 0.0 #> unk: 61 Class :character Class :character 1st Qu.: 0.0 #> pos: 56 Mode :character Mode :character Median : 192.0 #> Mean : 463.1 #> 3rd Qu.: 885.0 #> Max. :1938.0