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Inhaler use in chronic obstructive pulmonary disease patients: a meta-analysis† Cover

Inhaler use in chronic obstructive pulmonary disease patients: a meta-analysis†

Open Access
|Dec 2022

Figures & Tables

Figure 1.

Literature search and selection.

Table 1.

Clinical characteristics of included trials.

Inclusion of studiesType of studyCountryPercentage of women (%)Age (years) mean (+SD/range)Total number of people (n)Type of inhaler used
Loukil et al16CohortSpanish48.247.4 ± 16.354DPI
Gillissen et al.17CohortGermany44.665.6 ± 11.61236DPI
Lin et al18CohortChina36.867 ± 15136DPI, MDI
Li et al.19CohortChina33.164 (47–81)384DPI
Takaku et al.20CohortJapan9.072 ± 781MDI, DPI
Ngo et al21Cross-sectionalVietnam7.068.6 ± 8.770MDI, DPI, SMI
Bournival et al.22Cross-sectionalCanada49.069.8 ± 8.398DPI, SMI
Al Ammari et al.23Cross-sectionalSaudi Arabia48.958.4 ± 17.940MDI
Castel-Branco et al.24Cross-SectionalPortugal49.365.4 ± 18.3895DPI, MDI, SMI
Pothirat et al.8Cross-sectionalThailand35.971.2 ± 9.2103DPI, MDI, SMI
Ding et al.25Cross-sectionalAmerica48.0Men: 59.8 ± 10.2; Women: 60.7 ± 7.861MDI, SMI
Press et al.26Cross-SectionalAmerica58.659.229MDI
Oliveira et al.27RCTBrazil44.063.5 ± 8.2140DPI, SMI

1 Note: DPI, dry powder inhaler; MDI, metered dose inhaler; SMI, soft mist inhaler; ROC, randomised clinical trail.

Table 2.

Results of risk of bias evaluation of the included literature by NOS score.

Inclusion of studiesStudy population selectionComparability of resultsEvaluation of outcomes
Loukil et al.16*******
Gillissen et al.17********
Lin et al.18******
Li et al.19*******
Takaku et al.20*******

1 Note: NOS, Newcastle–Ottawa quality scale.

Table 3.

Results of the JBI cross-sectional survey bias risk assessment.

Inclusion in the studyRationale for the titlePopulation selectionExclusion criteriaSample characteristicsInstrument reliability and validity testsVeracityEthical principlesStatistical methods StudyStudy resultsStudy valueTotal score
Ngo et al.2117
Bournival et al.22NA14
Al Ammari et al.23NA15
Castel-Branco et al.24NA15
Pothirat et al.8NA15
Ding et al.25NANA13
Press et al.2616

1 Note: “②” is 2 marks for a detailed and comprehensive description; “①” is 1 mark for mentioning but not describing in detail; “NA” is 0 mark for not meeting the requirements.

Figure 2.

Results of risk bias evaluation of randomized controlled studies.

Figure 3.

Forest plots of error rates for at least 1 inhaler.

Figure 4.

A cross-sectional forest map of the error rates of different inhalants.

Figure 5.

Forest plot of error rates for use. Abbreviation: DPI, dry powder inhaler.

Figure 6.

Forest plot of error rates for quantified inhaler use.

Figure 7.

Forest plot of errors in SMI use. Abbreviation: SMI, soft mist inhalers.

Figure 8.

Funnel plot of at least 1 inhaler error made.

DOI: https://doi.org/10.2478/fon-2022-0044 | Journal eISSN: 2544-8994 | Journal ISSN: 2097-5368
Language: English
Page range: 343 - 352
Submitted on: Apr 3, 2022
Accepted on: Aug 31, 2022
Published on: Dec 31, 2022
Published by: Shanxi Medical Periodical Press
In partnership with: Paradigm Publishing Services

© 2022 Li-Juan Zhou, Xian-Xiu Wen, Rong Jiang, Huang-Yuan Zhou, Yan Li, Xiao-Rang Mao, Mei Lan, published by Shanxi Medical Periodical Press
This work is licensed under the Creative Commons Attribution 4.0 License.