Review Article
Time Trends and Regional Variation in Prevalence of Asthma and Associated Factors in Saudi Arabia: A Systematic Review and Meta-Analysis
Table 1
Characteristics of studies conducted on asthma in different regions of Saudi Arabia.
| | | Number of studies |
| | Cities | | Riyadh | 11 | | Jeddah | 5 | | Asir | 3 | | Khobar | 2 | | Taif | 2 | | Tabuk | 2 | | Madinah | 1 | | Makkah | 1 | | Najran | 1 | | Qassim | 1 | | Dammam | 1 | | Hofuf | 1 | | Bahra | 1 | | Nationwide | 1 | | Sample size | | >10000 | 4 | | >3000 | 4 | | <2000 | 8 | | <1000 | 15 | | Study setting | | Rural | 0 | | Urban | 27 | | Mixed | 4 | | Study instrument | | ISAAC | 9 | | Non ISAAC | 6 | | Case report | 11 | | Genomic study | 5 |
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