Table 3 Analysis of continuous and categorical variables in unilateral groups. Person test was taken for continuous variables and Mann-Whitney U-test for categorical variables and P < 0.05 was considered statistically significant.
From: Effect of retention time on renal function and kidney size in patients with indwelling DJ tubes
Unilateral group | Mean PW change rate | P vale |
|---|---|---|
Continuous variable | Person’s correlation coefficient | |
Age(years) | -0.07 | 0.64 |
Retention time(moths) | -0.47 | <0.01 |
Number of stent changes | -0.54 | <0.01 |
Categorical variables | U vale/% | |
Gender | 157 | 0.942 |
Female | 76.20% | |
Male | 23.80% | |
Lateralisation | 199 | 0.794 |
Left | 47.80% | |
Right | 52.40% | |
Diabetes/Hypertension | 110 | 0.249 |
Yes | 21.40% | |
No | 78.60% | |
CKD | 18 | 0.905 |
Yes | 2.40% | |
No | 97.60% | |
First diagnosis of hydronephrosis | 28 | 0.523 |
Yes | 95.20% | |
No | 4.80% | |
First diagnosis urine(+) | 214 | 0.909 |
Yes | 45.20% | |
No | 54.80% | |
Malignant obstructive factors | 177 | 0.363 |
Yes | 59.50% | |
No | 40.50% | |
History of pelvic surgery | 201 | 0.701 |
Yes | 57.10% | |
No | 42.90% | |
History of pelvic radiation | 201 | 0.703 |
Yes | 42.90% | |
No | 57.10% | |
History of chemotherapy | 212 | 0.871 |
Yes | 54.80% | |
No | 45.20% | |
Stent type | 168 | 0.301 |
DJ tube | 61.90% | |
Tumour stent tube | 38.10% | |
Obstruction location | 170 | 0.989 |
Upper | 73.80% | |
Lower | 26.20% |
