| Effective | GFR < 60 | GFR ≥ 60 | p | |||||||
| N = 188 | n | % | N1 = 31 | n1 | % | N2 = 157 | n2 | % | ||
| Gender | 0.0087 | |||||||||
| Female | 101 | 53.7 | 10 | 32.3 | 91 | 58 | ||||
| Male | 87 | 46.3 | 21 | 67.7 | 66 | 42 | ||||
| Age (year) | 0.0254 | |||||||||
| <53 | 89 | 47.3 | 9 | 29 | 88 | 51 | ||||
| ≥53 | 99 | 52.7 | 22 | 71 | 77 | 49.1 | ||||
| Socio-economic level | 0.0313 | |||||||||
| Hight | 128 | 68.1 | 16 | 51.6 | 112 | 71.3 | ||||
| Average | 60 | 31.9 | 15 | 48.4 | 45 | 28.7 | ||||
| Geographical area | 0.1012 | |||||||||
| Townsman | 158 | 84 | 23 | 74.2 | 135 | 86 | ||||
| Rural | 30 | 16 | 8 | 25.8 | 22 | 14 | ||||