Table 2 Sub-group meta-analysis of studies from 2018 to 2022
Sub-groups | Numbers of Study | Prevalence (%) | 95%CI | I2(%) | P-value | Egger’s test P-value |
|---|---|---|---|---|---|---|
Region | Â | Â | Â | Â | Â | Â |
 Eastern | 8 | 4 | (2, 6%) | 99 | P < 0.01 | – |
 Middle | 6 | 3 | (1, 6%) | 99 | P < 0.01 | – |
 Western | 10 | 2 | (1, 4%) | 99 | P < 0.01 | 0.17 |
Sex | Â | Â | Â | Â | Â | Â |
 Male | 16 | 3 | (2, 5%) | 98 | P < 0.01 | 0.12 |
 Female | 17 | 3 | (2, 4%) | 97 | P < 0.01 | 0.06 |
Urban/Rural | Â | Â | Â | Â | Â | Â |
 Urban | 5 | 2 | (0, 5%) | 97 | P < 0.01 | – |
 Rural | 6 | 3 | (1, 6%) | 98 | P < 0.01 | – |
Age groups | Â | Â | Â | Â | Â | Â |
 ≥18 years old | 14 | 6 | (4, 8%) | 98 | P < 0.01 | 0.04 |
 < 18 years old | 17 | 0 | (0, 1%) | 89 | P < 0.01 | 0.48 |