Table 2 Illustrative example of the data provided by the National Board of Health and Welfare regarding the hip replacement patients

Cancer case

Of the 274,930 total hip replacement patients 79,698 patients had 107,464 cancer cases registered between 1958 and 2013

Death

Of the 274,930 total hip replacements 108,771 patients deceased until 2013

Healthcare events

Of the 274,930 total hip replacements 274,086 underwent inpatient care at 2,910,848 occasions and 249,912 patients underwent outpatient care at 5,131,759 occasions. Additionally between 1997 and 2000 50,827 patients received inpatient care operations. After year 2000 inpatient care operations are registered in inpatient or outpatient care registries. This data base contains a total of 13,573,599 entries of ICD-9 or ICD-10 codes.

Drug usage

The yearly drug usage averaged around 7 million withdrawals by 175,000 patients. The total number of drug withdrawals was 74,427,986.