Martijn Sijbom

159 Routine data registries as a basis to analyse and improve the quality of antimicrobial prescription in Primary Care 6 Table 2. Distribution and characteristics of appropriate and inappropriate antimicrobial prescriptions Appropriate antimicrobial prescriptions Inappropriate antimicrobial prescriptions Number of antimicrobial prescriptions 480,792 104,325 Female sex % (n) 70.1% (336,910) 61.1% (63,722) Age groups in years, % (n) 0 – 4 5 – 14 15 – 44 45 – 64 65 and older 8.4% (40,322) 6.5% (31,279) 30.0% (144,005) 24.7% (118,636) 30.5% (146,550) 8.6% (9022) 6.6% (6895) 34.7% (36,208) 29.6% (30,904) 20.4% (21,296) Antimicrobial allergy % (n) 0 1 2 3 or more 98.6% (474,062) 1.2% (5915) 0.1% (712) 0.0% (103) 99.0% (103,240) 0.9% (975) 0.1% (91) 0.0% (19) Patients with co-morbidities 0 1 2 3 or more 66.5% (319,639) 25.4% (122,168) 6.5% (31,268) 1.6% (7717) 70.3% (73,313) 24.2% (25,213) 4772 1027 Ethnic background % (n)* Dutch Moroccan Turkish Surinamese Dutch Caribbean Global South Global North Unknown 75.5% (363,027) 2.5% (12,087) 2.2% (10,458) 3.7% (17,970) 1.2% (5904) 5.5% (26,353) 9.4% (44,988) 0% (1) 69.4% (72,414) 3.4% (3538) 3.2% (3336) 5.2% (5459) 1.4% (1456) 7.5% (7805) 9.9% (10,315) 0% (2) Households with 1 parent 12.9% (37,173) 11.9% (8319) Family income Below average income From 1 up to 2 times average income More than 2 times average income 59.3% (257,008) 38.6% (167,506) 2.1% (9222) 57.4% (56,161) 40.3% (39,428) 2.3% (2275) Per disease group % (n) UTI STD Ear GE tract Viral Skin Gyn RTI 45.3% (217,710) 2.1% (10,048) 9.6% (46,154) 0.1% (667) 0.0% (0) 15.8% (76,069) 0.1% (474) 27.0% (129,670) 0.0% (30) 0.2% (238) 1.7% (1765) 3.1% (3221) 1.6% (1694) 10.3% (10,711) 1.5% (1605) 81.5% (85,061) UTI: Urinary Tract infection STD: Sexual transmitted disease GE: Gastro - intestinal Gyn: Gynaecologic RTI: Respiratory tract infection

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