TYPES OF INVESTIGATIONS ORDERED

100 National Medical Care Statistics 2014 Figure 10.3.2: Top 10 investigations ordered in private clinics in 2014 ¼ Comprise multiple ICPC-2 codes see Appendix 4

10.4 DIAGNOSES WITH INVESTIGATIONS ORDERED

Table 10.4.1 reports the most common diagnoses for which investigations were ordered in primary care in 2014. • The top 10 diagnoses for which investigations were most frequently ordered accounted for 73.2 of all diagnoses accompanied by tests. • Diabetes accounted for a quarter 24.3 of the diagnoses with at least one investigation ordered. This corresponds with another finding in NMCS 2014 that glucose andor glucose tolerance test was the most frequently ordered investigation in primary care see Section 10.2. • The second most common diagnosis for which investigations were ordered was hypertension, which amounted to 16.0 of all diagnoses accompanied by tests, followed by lipid disorder at 9.6. • Together, the three aforementioned chronic diseases represented half 49.9 of all diagnoses for which investigations were ordered, a finding which could be attributed to the high burden of the three metabolic syndrome-related conditions in primary care see Chapter 8.

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2 4 6 8 10 12 14 16 18 20 22 Hepatitis serology Urine pregnancy test ÁÂ ÃÄ ÅÆÇÂ ÈÅ Ã É Ê Ë Æ ÃÌ Í Ä Æ ÃÌ ÅÎ Ï Î ÏÃÐ ÑÒ Ã É Å ÓÔ Æ ÌÈ Obstetric ultrasound Blood test Full blood count Lipids Õ ÆÎ ÏÃ Å Ã É Å Ð Glucoseglucose tolerance Rate per 100 encounters 101 • • • • Chapter 10 : Investigations Table 10.4.1: Top 10 diagnoses Ö or which investigations were most Ö r × Ø uently ordered in primary care clinics in 2014 Rank Diagnosis Ù nweighted count n Ú ÛÜ 599 Weighted count n Ú ÛÝÜ Þß Û à Percent á â diagnoses with investigation n Ú Û Ý Ü Þß Ûà Rate per 100 contacts with each diagnosis Þ ãä CI 1 Diabetes - a ååæ 1,958 20,157 24.3 55.1 47.9–62.3 Non-gestational diabetes æ 1,884 19,648 23.7 55.4 47.9–63.0 Gestational diabetes 74 509 0.6 44.2 30.3–58.1 2 Hypertension - a åå æ 1,613 13,248 16.0 23.6 19.0–28.1 Hypertension - cardiovascular æ 1,605 13,174 15.9 23.5 18.9–28.2 Hypertension in pregnancy 8 74 0.1 24.3 4.4–44.3 3 Lipid disorder 938 8,004 9.6 23.1 17.1–29.1 4 Medical examination - pregnancy æ 538 5,129 6.2 54.2 44.7–63.7 5 Upper respiratory tract infection 475 3,793 4.6 5.2 3.8–6.6 6 Medical examination æ 313 3,371 4.1 44.9 36.2–53.6 7 Fever 213 2,311 2.8 20.5 15.2–25.9 8 Urinary tract infection æ 187 2,294 2.8 61.5 52.6–70.5 9 Pregnancy 101 1,264 1.5 73.3 62.3–84.2 10 Blood test 56 1,204 1.5 96.8 93.1–100.0 ç Comprise multiple ICPC-2 codes see Appendix 4 REFERENCE 1. Best test è é The general principles of laboratory investigations in primary care [Internet]. Dunedin New Zealand: Best Practice Advocacy Centre New Zealand; 2013 Feb [cited 2015 May 7];p.3-9. Available from: http:www.bpac.org.nzBT2013Februarydocsbest ê ë est è ê ì eb2013 ê í eneral ê î rincipl ï è ê î ag ï è ê ð - 11.pdf