Table 2: Proportion of hypertensive patients in different stages of chronic kidney disease.

GFR stage GFR (ml/min per 1.73 m2) N(%) total 204
Stage 1 ≥ 90 28 (13.7)
Stage 2 60-89 73 (35.8)
Stage 3a 45-59 57 (27.9)
Stage 3b 30-44 35 (17.2)
Stage 4 15-29 10 (4.9)
Stage 5 < 15 1 (0.5)

GFR: Glomerular filtration rate.