A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 197

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 197
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 271
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3165
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 597
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 511
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 317
Function: require_once

Regression based quasi-experimental approach when randomisation is not an option: interrupted time series analysis. | LitMetric
Browse Categories

Regression based quasi-experimental approach when randomisation is not an option: interrupted time series analysis.

Evangelos Kontopantelis , Tim Doran , David A Springate , Iain Buchan , David Reeves

BMJ

NIHR School for Primary Care Research, Centre for Primary Care, Institute of Population Health, University of Manchester, UK Centre for Biostatistics, Institute of Population Health, University of Manchester.

Published: June 2015

Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Interrupted time series analysis is a quasi-experimental design that can evaluate an intervention effect, using longitudinal data. The advantages, disadvantages, and underlying assumptions of various modelling approaches are discussed using published examples

Download full-text PDF

 Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4460815PMC
http://dx.doi.org/10.1136/bmj.h2750DOI Listing

Publication Analysis

Top Keywords

interrupted time
8
time series
8
series analysis
8
regression based
4
based quasi-experimental
4
quasi-experimental approach
4
approach randomisation
4
randomisation option
4
option interrupted
4
analysis interrupted
4

Similar Publications

Privacy Policy Site Map

© LitMetric 2025. All rights reserved.