Table 6.

Types of methodology

Method  No. of articles%
Quantitative  5365
 Secondary dataAds22
  Public databases911
  Sales data from firms11
  Social media11
 SurveyIn-person2025
  On-line1519
  On-line and in-person56
Qualitative  8 
  Focus groups11
  In-depth interviews45
  Case study22
  Observations11
Mixed method  810
Conceptual  1012
Literature review  22
Source: Table by author

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