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The publications listed here report on investigations which were carried out as Pharmacoepidemiology Research Network projects. To see other publications by members of the Pharmacoepidemiology Research Network Core Academic Group please look at their individual profiles on the Our people page.

Refereed papers

Guo J* / Parkin L*, Zeng J, Barson D, Horsburgh S.  Treatment escalation patterns in people with type 2 diabetes: a nationwide cohort study of new users of metformin monotherapy in New Zealand. BMJ Open 2021;11:e051884. doi:10.1136/ bmjopen-2021-051884 *Joint first authors.

Parkin L, Williams S, Sharples K, Barson D, Horsburgh S, Jackson R, Wu B, Dummer J. Long-acting bronchodilators and risk of acute coronary syndrome in patients with chronic obstructive pulmonary disease: a nested case-control study. Journal of Internal Medicine 2021; Early View.

Parkin L, Maclennan K, Te Morenga L, Inder M. Improving metformin adherence and persistence: views of people with type 2 diabetes. New Zealand Medical Journal 2021; 134: 1536.

Donald S, Sharples K, Barson D, Horsburgh S, Parkin L. Antidepressant dispensing before, during, and after pregnancy in New Zealand, 2005‒2014. Australian and New Zealand Journal of Obstetrics and Gynaecology 2021; 1 – 9.

Horsburgh S, Sharples K, Barson D, Zeng J, Parkin L. Patterns of metformin monotherapy discontinuation and reinitiation in people with type 2 diabetes mellitus in New Zealand. PLoS ONE 2021;16: e0250289.

Parkin L, Williams S, Barson D, Sharples K, Horsburgh S, Jackson R, Dummer J. Is the use of two versus one long-acting bronchodilator by patients with COPD associated with a higher risk of acute coronary syndrome in real-world clinical practice? BMJ Open Respiratory Research. 2021; 8: e000840.

Sigglekow F, Horsburgh S, Parkin L. Statin adherence is lower in primary than secondary prevention: A national follow-up study of new users. PLoS ONE 2020;15(11):e0242424. doi:10.1371/journal.pone.0242424 

Donald S, Sharples K, Barson D, Horsburgh S, Parkin L. Patterns of prescription medicine dispensing before and during pregnancy in New Zealand, 2005–2015. PLOS ONE 2020;15(6):e0234153. doi:10.1371/journal.pone.0234153

Donald S, Sharples K, Barson D, Horsburgh S, Parkin L. Prescription medicines with potential for foetal harm: dispensing before and during pregnancy in New Zealand, 2005–2015. European Journal of Clinical Pharmacology 2020;76:887–96. doi:10.1007/s00228-020-02868-2

Parkin L*/Quon J*, Sharples K, Barson D, Dummer J. Under-use of beta-blockers by patients with chronic obstructive pulmonary disease and co-morbid acute coronary syndrome: a nationwide follow-up study in New Zealand. Respirology 2020;25:173-82. doi:10.1111/resp.13235. *Joint first authors.

Horsburgh S, Barson D, Zeng J, Sharples K, Parkin L. Adherence to metformin monotherapy in people with type 2 diabetes in New Zealand. Diabetes Research and Clinical Practice 2019;158:107902. doi:10.1016

Donald S, Barson D, Horsburgh S, Sharples K, Parkin L. Generation of a pregnancy cohort for medicine utilisation and medicine safety studies in New Zealand. Pharmacoepidemiology and Drug Safety 2018;27:1335-43.

Blank ML, Parkin L, Zeng J, Barson D. Proton pump inhibitors and infant pneumonia: nationwide nested case-control study. Journal of Pediatric Gastroenterology and Nutrition 2018;67:335–40.

Quon J, Parkin L, Sharples K, Barson D. Co-prescribing of contraindicated and use-with-caution drugs in a national cohort of new users of simvastatin: How well are prescribing guidelines followed? New Zealand Medical Journal 2018;131:1474.

Parkin L, Barson D, Zeng J, Horsburgh S, Sharples K, Dummer J. Patterns of use of long-acting bronchodilators in people with COPD: A nationwide follow-up study of new users in New Zealand. Respirology 2017;23:583-92. doi:10.1111/resp.13235

Parkin L, Sharples KJ, Barson DJ, Blank M-L. Simvastatin dose and acute kidney injury without concurrent serious muscle injury: a nationwide nested case-control study. PLOS ONE 2017;12(7):e0182066. doi:10.1371/journal.pone.0182066

Blank ML, Parkin L. National study of off-label proton pump inhibitor use among New Zealand infants in the first year of life (2005-2012). Journal of Pediatric Gastroenterology and Nutrition 2017;65:179-84. doi:10.1097/MPG.0000000000001596

McKergow E, Parkin L, Barson DJ, Sharples KJ, Wheeler BJ. Demographic and regional disparities in insulin pump utilization in a setting of universal funding: A New Zealand nationwide study. Acta Diabetologica 2017;54:63-71. doi:10.1007/s00592-016-0912-7

Ma A, Parkin L. Randomised controlled trials cited in pharmaceutical advertisements targeting New Zealand health professionals: do they support the advertising claims and what is the risk of bias? NZMJ 2015;128:1421


Donald S, Parkin L, Horsburgh S, Barson D. Disentangling the age at dispensing/patient category mismatch in the Pharmaceutical Collection. Report for Analytical Services, Ministry of Health. March 2016.