Enjoy teaching;  passionate about research.

PhD, MSc (Health Service Management), Diploma in Epidemiology, Certificate in Applied Theology, MB BS.

Oversee undergraduate research, and act as statistical consultant, in Professional Health Sciences.

Direction and size of bias in estimates of inpatient waiting times;  consequences for waiting list dynamics and waiting list initiatives;  and development of estimates that are free from bias.   Stock management of perishable products, e.g., vaccines, blood products, and sterile supplies.   Analysis of ‘time-to-event’ data using life table techniques.

Admissions Tutor for BSc (Hons) Physiotherapy
Module Tutor for PT3011 and PTM001.

• BSc (Hons) Physiotherapy
• BSc (Hons) Podiatric Medicine

• Statistics (PT1013); Research (PT3011);  Research (PTM001)

In preparation:

Armstrong, P.W. ‘Is there a relationship between changes in the size of the list and changes in the length of wait?’

Recent research:

Armstrong, P.W. (2012) ‘Estimating the length of waits: a description of the period lifetable method and comparison with census and event based methods’, Health Services Management Research, 25, pp. 97-109.

Armstrong, P.W. (2010) ‘Spotting the pantomime villain: do the usual approaches correctly indicate when waiting times got shorter?’ Health Services Management Research, 23, pp. 103-15.

Armstrong, P.W. (2010) ‘One question, two answers: do the two most commonly used methods of sampling describe the length of the prospective wait for admission to hospital?’ Health Services Management Research, 23, pp. 18-24.

Armstrong, P.W. (2009) ‘What do we know? Limitations of the two methods most commonly used to estimate the length of the prospective wait’, Health Services Management Research, 22, pp. 8-16.

Armstrong, P.W. (2004) ‘Correction’, Statistics in Medicine, 23, pp. 1987.

Armstrong, P.W. (2002) ‘The ebb and flow of the NHS waiting list: how do recruitment and admission affect event-based measures of the length of ‘time-to-admission’?’ Statistics in Medicine, 21, pp. 2991-3009.

Armstrong, P.W. (2000) ‘First steps in analysing NHS waiting times: avoiding the ‘stationary and closed population’ fallacy’, Statistics in Medicine, 19, pp. 2037-2051.

Armstrong, P.W. (2000) ‘Unrepresentative, invalid and misleading: are waiting times for elective admission wrongly calculated?’ Journal of Epidemiology and Biostatistics, 5(2), pp. 117-123.