Table 4.
Demographics of ADHD cases included in this systematic review. No studies included participants that received antibiotic treatment. In the row labeled “Total”, the total number of participants, and total gender distribution and GI symptoms percentage (for studies providing numbers) for all studies combined, are displayed.
| Study | Country | Sample size | Gender (Male %) | Age (years) | Diagnostic instrument | GI symptoms (% of total) | Special diet or ADHD medication |
|
|---|---|---|---|---|---|---|---|---|
| Aarts et al.65 | The Netherlands | ADHD: SIB: Ctrl: |
19 21 56 |
68.4 SIB/ctrl: 53.2 |
Mean age: ADHD: 19.5 SIB+Ctrl: 27.1 |
K-SADS-PL | N/A | Diet: N/A Unspecified number of cases received ADHD medication |
| Prehn-Kristensen et al.66 | Germany | ADHD: Ctrl: | 14 17 |
100.0 100.0 |
Mean age: 11.9 |
K-SADS-PL | N/A | Diet: No difference in diet. 10 cases received Methylphenidate. |
| Jiang et al. | People’s Republic of China | ADHD: Ctrl: | 51 32 |
74.5 68.8 |
6-10 | K-SADS-PL | 0.0 0.0 |
No special diet No pharmacological treatment of ADHD |
| Wang et al. | Taiwan | ADHD: Ctrl: | 30 30 |
76.7 60.0 |
6-16 | K-SADS-PL ADHD-RS |
0.0 0.0 |
Diet of cases differed from that of controls. No pharmacological treatment of ADHD |
| Total |
ADHD SIB Ctrl |
114 21 135 |
77.2 SIB/ctrl 62.8 |
6-N/A |
N/A/ 0.0 |
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