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Table 2 Highest Grade AE experienced by duration of fast

From: Is fasting safe? A chart review of adverse events during medically supervised, water-only fasting

AE Grade, n (%)
  none 1 2 3 4 5
Fasting (Spearman’s ρ = 0.24, p < 0.001)
Short 62 (13.9) 136 (30.5) 159 (35.7) 89 (20) 0 (0.0) 0 (0.0)
Medium 10 (4.2) 61 (25.6) 108 (45.4) 58 (24.4) 1 (0.4) 0 (0.0)
Long 0 (0.0) 7 (10.9) 32 (50) 25 (39.1) 0 (0.0) 0 (0.0)
Extended 0 (0.0) 2 (10) 6 (30) 12 (60) 0 (0.0) 0 (0.0)
Total 72 (9.4) 206 (26.8) 305 (39.7) 184 (24) 1 (0.1) 0 (0.0)
Refeeding (Spearman’s ρ = 0.23, p < 0.001)
Short 133 (29.8) 181 (40.6) 98 (22) 34 (7.6) 0 (0.0) 0 (0.0)
Medium 39 (16.4) 108 (45.4) 69 (29) 21 (8.8) 1 (0.4) 0 (0.0)
Long 2 (3.1) 24 (37.5) 25 (39.1) 13 (20.3) 0 (0.0) 0 (0.0)
Extended 0 (0.0) 7 (35) 8 (40) 5 (25) 0 (0.0) 0 (0.0)
Total 174 (22.7) 320 (41.7) 200 (26) 73 (9.5) 1 (0.1) 0 (0.0)
Entire period (Spearman’s ρ = 0.22, p < 0.001)
Short 43 (9.6) 125 (28) 175 (39.2) 103 (23.1) 0 (0.0) 0 (0.0)
Medium 7 (2.9) 58 (24.4) 106 (44.5) 66 (27.7) 1 (0.4) 0 (0.0)
Long 0 (0.0) 3 (4.7) 32 (50) 29 (45.3) 0 (0.0) 0 (0.0)
Extended 0 (0.0) 1 (5) 5 (25) 14 (70) 0 (0.0) 0 (0.0)
Total 50 (6.5) 187 (24.3) 318 (41.4) 212 (27.6) 1 (0.1) 0 (0.0)
  1. Short, 2–7 fasting days; Medium, 8–14 fasting days; Long, 15–21 fasting days; Extended, 22+ fasting days