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Table 3 Baseline and post-45-day VLCKD dermatological parameters of women with acne and obesity

From: Very low-calorie ketogenic diet (VLCKD): a therapeutic nutritional tool for acne?

Parameters (N = 31)

Baseline

Post 45 days of active phase of VLCKD

p-value

∆%

GAGS

24.26 ± 3.61

16.48 ± 2.46

<0.001

− 31.46 ± 9.53

 Mild-severity (1–18)

27 (87.1)

χ2 = 44.35, p<0.001

 

 Moderate-severity (19–30)

31 (100.0)

4 (12.9)

 

DLQI

14.55 ± 4.46

7.32 ± 3.28

<0.001

− 45.44 ± 24.02

 Small effect on QoL (2–5)

1 (3.2)

10 (32.3)

χ2 = 7.07, p=0.008

 

 Moderate effect on QoL (6–10)

5 (16.1)

16 (51.6)

χ2 = 7.20, p=0.007

 

 Very large effect on QoL (11–20)

22 (71.0)

5 (16.1)

χ2 = 16.80, p<0.001

 

 Extremely large effect on QoL (21–30)

3 (9.7)

χ2 = 1.40, p = 0.237

 
  1. VLCKD very low-calorie ketogenic diet, Δ% percentage change, GAGS global acne grading system, DLQI dermatology life quality index, QoL quality of life
  2. A p-value in bold type denotes a significant difference (p < 0.05)