Louisa conducts diverse epidemiological studies including analysis of large-scale community and clinical population surveys, data linkage studies focusing upon people with a history of drug dependence or chronic pain, and cohort studies of young people. Louisa has published over 560 peer reviewed papers, 120 technical reports and monographs, three books and 45 book chapters. Her H-index in Scopus is 80, and 104 in Google Scholar.