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Table 3.

Description of variables

VariableDescription
Age at departure Age of the researcher at the time of departure. 
Gender Dummy variable equal to 1 if the researcher is male, and 0 otherwise. 
Past educational experience abroad Dummy variable equal to 1 for students who have experienced education abroad before entering the visiting doctoral program, and 0 otherwise. 
Home supervisor network Dummy variable equal to 1 if the home supervisor has coauthored a research article with the hosting supervisor before the start of the visiting doctoral program, and 0 otherwise. 
Student’s research autonomy Dummy variable equal to 1 if the PhD student has published without the home supervisor before the program, and 0 otherwise. 
Years from visiting to graduation The years elapsed between the year of PhD graduation and the end of the visiting period. 
Subfields 
 • Medicine Dummy variable equal to 1 if the doctoral student was enrolled in a PhD program in Medicine, and 0 otherwise. 
 • Engineering Dummy variable equal to 1 if the doctoral student was enrolled in a PhD program in Engineering, and 0 otherwise. 
 • Basic Science Dummy variable equal to 1 if the doctoral student was enrolled in a PhD program in Basic Science, and 0 otherwise. 
VariableDescription
Age at departure Age of the researcher at the time of departure. 
Gender Dummy variable equal to 1 if the researcher is male, and 0 otherwise. 
Past educational experience abroad Dummy variable equal to 1 for students who have experienced education abroad before entering the visiting doctoral program, and 0 otherwise. 
Home supervisor network Dummy variable equal to 1 if the home supervisor has coauthored a research article with the hosting supervisor before the start of the visiting doctoral program, and 0 otherwise. 
Student’s research autonomy Dummy variable equal to 1 if the PhD student has published without the home supervisor before the program, and 0 otherwise. 
Years from visiting to graduation The years elapsed between the year of PhD graduation and the end of the visiting period. 
Subfields 
 • Medicine Dummy variable equal to 1 if the doctoral student was enrolled in a PhD program in Medicine, and 0 otherwise. 
 • Engineering Dummy variable equal to 1 if the doctoral student was enrolled in a PhD program in Engineering, and 0 otherwise. 
 • Basic Science Dummy variable equal to 1 if the doctoral student was enrolled in a PhD program in Basic Science, and 0 otherwise. 
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