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Table 3 Questionnaire validation on 77 patients affected by syncope and other forms of impaired consciousness

From: Benefit of dual-chamber pacing with Closed Loop Stimulation in tilt-induced cardio-inhibitory reflex syncope (BIOSync trial): study protocol for a randomized controlled trial

Items

Syncope expert

(# Yes/# No)

Patient

(# Yes/# No)

Inter-rater agreement, kappa statistics (SE)a

p valueb

Presentation

 1–2. Syncope/pre-syncope

59/18

56/21

0.90 (0.11)

<0.0001

 3. Onset, duration, recovery

62/9

61/10

0.21 (0.12)

0.04

 4. Similar to previous episodes

50/16

50/16

0.67 (0.12)

< 0.0001

 5. Time to stop and lie/sit down

38/33

42/29

0.67 (0.12)

< 0.0001

Context

 6. Presence of witnesses

46/28

50/24

0.70 (0.11)

< 0.0001

 7. Location

52/25

52/24

0.69 (0.11)

< 0.0001

 8. Contemporary actions/position

    

  Standing

40

32

  

  Sitting

21

24

0.58

< 0.0001

  Lying

2

4

  

  Standing up

7

6

  

Sequelae

 10. Injuries

29/40

31/38

0.88 (0.12)

< 0.0001

 11. Access to emergency room

26/43

26/43

1.00 (0.12)

< 0.0001

 12. Hospitalization

13/57

14/56

0.68 (0.12)

< 0.0001

  1. aKappa agreement in the range 0.21–0.40 is considered fair, 0.41–0.60 moderate, 0.61–0.80 substantial, 0.81– 1.00 almost perfect
  2. bZ statistic p values (Stata/SE 11.1, StataCorp LP, TX, USA)
  3. SE = standard error