Table 3 Meta-regression for the effects of year of data collection and publication
From: Prevalence of overweight and obesity among Iranian population: a systematic review and meta-analysis
Variable | Potential confounder | Coefficient | SE | P value |
|---|---|---|---|---|
All age groups | Â | Â | Â | Â |
Prevalence of overweight | Year of data collection | 0.005 | 0.003 | 0.07 |
| Â | Year of publication | 0.008 | 0.004 | 0.04 |
Prevalence of obesity | Year of data collection | 0.002 | 0.001 | 0.14 |
| Â | Year of publication | 0.004 | 0.002 | 0.11 |
Prevalence of overweight and obesity | Year of data collection | 0.006 | 0.004 | 0.14 |
| Â | Year of publication | 0.009 | 0.005 | 0.10 |
≤ 18 years |  |  |  |  |
Prevalence of overweight | Year of data collection | 0.003 | 0.001 | 0.01 |
| Â | Year of publication | 0.001 | 0.002 | 0.45 |
Prevalence of obesity | Year of data collection | 0.0005 | 0.001 | 0.72 |
|  | Year of publication | − 0.001 | 0.002 | 0.66 |
Prevalence of overweight and obesity | Year of data collection | 0.005 | 0.003 | 0.04 |
| Â | Year of publication | 0.003 | 0.004 | 0.41 |
> 18 years |  |  |  |  |
Prevalence of overweight | Year of data collection | − 0.000009 | 0.003 | 0.99 |
| Â | Year of publication | 0.0006 | 0.004 | 0.88 |
Prevalence of obesity | Year of data collection | 0.003 | 0.001 | 0.04 |
| Â | Year of publication | 0.001 | 0.003 | 0.61 |
Prevalence of overweight and obesity | Year of data collection | − 0.002 | 0.005 | 0.62 |
|  | Year of publication | − 0.0007 | 0.006 | 0.90 |