<p>T (0) represents the time point on admission from urinary tract infection; the “plus” and “minus” symbols represent the time interval after and before admission, respectively. Acute kidney injury occurred in diabetic patients with chronic kidney disease [eGFR at T (0) versus T (−6); <i>p</i> = 0.007 in Group A; <i>p</i> = 0.001 in Group B], and eGFR reverted to the trend 6 months later if urinary tract infection was cured.</p