Unite activities

You can use act_unite() to remove unwanted differences between activities. For example, consider activities from the sepsis data set.

sepsis %>%
    activities()

## # A tibble: 16 × 3
##    activity         absolute_frequency relative_frequency
##    <fct>                         <int>              <dbl>
##  1 Leucocytes                     3383           0.222   
##  2 CRP                            3262           0.214   
##  3 LacticAcid                     1466           0.0964  
##  4 Admission NC                   1182           0.0777  
##  5 ER Triage                      1053           0.0692  
##  6 ER Registration                1050           0.0690  
##  7 ER Sepsis Triage               1049           0.0689  
##  8 IV Antibiotics                  823           0.0541  
##  9 IV Liquid                       753           0.0495  
## 10 Release A                       671           0.0441  
## 11 Return ER                       294           0.0193  
## 12 Admission IC                    117           0.00769 
## 13 Release B                        56           0.00368 
## 14 Release C                        25           0.00164 
## 15 Release D                        24           0.00158 
## 16 Release E                         6           0.000394

We can replace all Release X activities with a single unique Release activity.

sepsis %>%
    act_unite(Release = c("Release A","Release B","Release C","Release D","Release E")) %>%
    activities()

## # A tibble: 12 × 3
##    activity         absolute_frequency relative_frequency
##    <fct>                         <int>              <dbl>
##  1 Leucocytes                     3383            0.222  
##  2 CRP                            3262            0.214  
##  3 LacticAcid                     1466            0.0964 
##  4 Admission NC                   1182            0.0777 
##  5 ER Triage                      1053            0.0692 
##  6 ER Registration                1050            0.0690 
##  7 ER Sepsis Triage               1049            0.0689 
##  8 IV Antibiotics                  823            0.0541 
##  9 Release                         782            0.0514 
## 10 IV Liquid                       753            0.0495 
## 11 Return ER                       294            0.0193 
## 12 Admission IC                    117            0.00769

Note that, in contrast with act_collapse(), the number of activity instances will never be changed by act_unite(). Only the labels of existing activity instances will be changed. On the other hand act_collapse() merges multiple activity instances into a new instance.

bupaR Docs | Unite activities

Unite activities