Table 2

Patient characteristics

Correct antibiotic and administration as stated in the guidelines of 2013Incorrect antibiotic or administration as stated in the guidelines of 2013All groups
Total number of HAs331610 01313 329
Age, mean82.982.582.6
Gender, male (%)1010 (30.5)3020 (30.2)4030 (30.2)
Dementia, no (%)2047 (61.7)6352 (63.4)8399 (63)
Dementia, yes (%)901 (27.2)2564 (25.6)3465 (26)
Dementia, uncertain (%)306 (9.2)908 (9.1)1214 (9.1)
Dementia, missing (%)62 (1.9)189 (1.9)251 (1.9)
ASA 1 (%)29 (0.9)122 (1.2)151 (1.1)
ASA 2 (%)997 (30.1)3258 (32.5)4255 (31.9)
ASA 3 (%)1998 (60.3)5872 (58.6)7870 (59)
ASA 4 (%)261 (7.9)661 (6.6)922 (6.9)
ASA 5 (%)2 (0.1)9 (0.1)11 (0.1)
Missing ASA (%)29 (0.9)91 (0.9)120 (120)
Anterolateral approach (%)183 (5.5)741 (7.4)924 (6.9)
Direct lateral approach (%)2466 (74.4)8271 (82.6)10 737 (80.6)
Posterior approach (%)634 (19.1)811 (8.1)1445 (10.6)
Other/missing approach (%)33 (1)190 (1.9)223 (1.7)