This is the official website of SNTL,
the statistical consulting part of Nick Longford's professional activities.
Established: January 2001. Web presence: June 2004.
Email: sntlnick @ SNTL . co . uk
On 30th November 2021, I left the job at School of Public Health,
Imperial College London, UK
and reverted to operating as a statistical consultant (self-employed),
with a principal engagement
in the Data Science Division, Marks and Spencer plc, London, UK
(from 4th January 2021 till 31st December 2022)
Also: National Neonatal Audit Programme (RCPCH)
Appeared in March 2021: Statistics for Making Decisions (Chapman and Hall/CRC, 2021).
With the motto:
The rightful place of the hypothesis test is in a science museum, right next to the steam engine.
Statistical Studies of Income, Poverty and Inequality in Europe: Computing and Graphics in R using EU-SILC
(Chapman and Hall/CRC, New York, 2014).
Supporting materials (R code)
Statistical Decision Theory
(Springer-Verlag, New York, 2013).
Supporting materials (R code)
Supporting materials for Studying Human Populations.An Advanced Course in Statistics
(Springer-Verlag, New York, 2008).
SNTL business - areas of expertise: causal inference in observational studies (the potential outcomes framework)
incomplete (missing) data
statistical modelling (including addressing model uncertainty)
statistical computing and graphics in R
analysis of very large datasets (including surveys) and data mining
analysis of small datasets for which maximum likelihood is inefficient;
- using prior information and incorporating the consequences of errors
design of surveys and other studies
clinical trials (beyond hypothesis testing)
being an expert witness (civil and criminal law)
Applications in: clinical medicine, epidemiology & biostatistics
technical (statistical and data-based related) audit
local and central government statistics
statistics in civil and criminal law
pharmaceutical research and development
data science in the service of children and young people
(including: health care utilisation during the pandemic)
realising the potential of the Whole Systems Integrated Care database
Business perspectiveStatistics is the business and science of making intelligent decisions
in the presence of uncertainty and constrained by limited resources
It is a study of how decisions should be made,
as opposed to how they tend to be made.
My mission is to serve the best interests of my clients, as regards data- A photo and motto
related information and decisions, just like the medical profession serves
the best interests of the patients as regards their health and welfare,
and the legal profession serves the best interests of their clients
as regards the civil and criminal law.
Mortality analysed by propensity score matching: an application to national neonatal audit.
In Brazilian Journal of Biometrics 41, 311-331, 2023.
The potential outcomes framework for problems with or without causal agenda
Health and education of children and young people in Northwest London
The full research potential of an administrative database
Calibration of weights in survey sampling
Recent whereabouts (virtual)
2nd International Coference on Data Science and Official Statistics;
Jakarta, Indonesia, November 2023.