Table 2—

Characteristics of subjects with different renal function

Albuminuria (−) and β2-microglobulinuria (−)Albuminuria (+) and β2-microglobulinuria (−)Albuminuria (+) and β2-microglobulinuria (+)Albuminuria (−) and β2-microglobulinuria (+)
n129552916
Sex (male/female)56/7316/3913/167/9
Age (years)66.2 ± 0.865.9 ± 1.265.2 ± 1.466.7 ± 2.2
Duration (years)8.3 ± 0.58.3 ± 0.910.6 ± 1.78.1 ± 1.5
Smokers (current/previous/never)16/22/917/6/426/3/204/2/10
Drinkers (current/previous/never)18/14/973/7/454/5/201/4/11
BMI (kg/m2)25.7 ± 0.326.9 ± 0.5*26.4 ± 0.7*25.4 ± 1.0
FCG (mmol/l)7.60 ± 0.228.05 ± 0.359.79 ± 0.54§7.56 ± 0.53
MT-Ab (units/ml)125.55 (32.56–516.40)130.14 (41.40–400.14)151.30 (58.93–429.11)213.79 (69.29–564.14)§
Urinary albumin (mg/g Cr)11.13 (0.97–29.74)97.88 (31.00–848.89)139.09 (31.99–724.08)13.04 (3.18–29.78)§
Urinary β2-microglobulin (μg/g Cr)69.37 (31.87–192.04)98.52 (34.47–192.04)598.97 (208.46–2076.98)§461.81 (215.09–3856.23)§
Blood cadmium (μg/l)0.56 (0.03–3.16)0.66 (0.06–2.58)0.63 (0.06–4.54)0.91 (0.31–3.50)
Urinary cadmium (μg/g Cr)0.34 (0.05–1.91)0.39 (0.07–4.17)0.45 (0.14–2.14)0.64 (0.19–2.00)
  • Data are means ± SE or GM (range). Compared with the albuminuria (−) + β2-microglobulinuria (−) group:

  • *

    * P < 0.05,

  • P < 0.01. Compared with the albuminuria (+) + β2-microglobulinuria (−) group:

  • P < 0.05,

  • §

    § P < 0.01, Cr, creatinine.