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Table 2 Comparison of outcomes measures before and after treatment with vitamin B12

From: Effect of vitamin B12 on the symptom severity and psychological profile of fibromyalgia patients; a prospective pre-post study

Variable

Before treatment

After treatment

Mean diff (95%C.I.)

p value

FIQR-total score

49.80 (21.86)

40.00 (18.36)

 − 9.79 (− 4.13, − 15.45)

 < 0.01

FIQR-function domain

13.17 (7.33)

10.30 (5.84)

 − 2.86 (− 0.53, − 5.20)

0.01

FIQR-overall domain

10.32 (6.22)

8.25 (6.22)

 − 2.07 (− 0.20, − 3.93)

0.03

FIQR-symptom domain

26.30 (10.39)

21.44 (8.58)

 − 4.85 (− 1.91, − 7.79)

 < 0.01

HADS-anxiety

9.33 (4.30)

7.70 (3.60)

 − 1.63 (− 0.35, − 2.90)

0.01

HADS-depression

6.67 (3.90)

7.17 (3.76)

0.50 (1.60, − 0.60)

0.36

SF12-physical component

33.30 (10.22)

36.90 (12.30)

 − 3.28 (9.56)

0.08

SF12-mental component

42.58 (14.70)

43.82 (14.39)

 − 1.24 (10.15)

0.94

Pain-VAS

6.01 (2.68)

5.45 (2.71)

 − 0.58 (− 1.51, 0.35)

0.21

  1. Values are mean (standard deviation), FIQR revised fibromyalgia impact questionnaire, HADS hospital anxiety and depression scale, SF12 12-item short form survey, VAS visual analog scale
  2. p value < 0.05 is statistically significant