Table 2 Factor analysis for the symptoms: Rotated Component Matrix for 3 factors.
From: Identifying dyspepsia in the Greek population: translation and validation of a questionnaire
Component | |||
|---|---|---|---|
SYMPTOMS | 1 | 2 | 3 |
(Item 1) Pain or discomfort | 0.870 | ||
(Item 4) Feeling of excess wind or fullness in the upper abdomen | 0.566 | ||
(Item 7) Heartburn | 0.777 | ||
(Item 10) Heartburn when lying in bed | 0.882 | ||
(Item 13) Heartburn only when lying in bed | 0.483 | ||
(Item 14) Awakened by the heartburn | 0.861 | ||
(Item 15) Acid taste at the back of the throat | 0.555 | ||
(Item 18) Nausea | 0.816 | ||
(Item 21) Vomiting | 0.876 | ||
(Item 24) Difficulty in swallowing | 0.651 | ||
Eigenvalues | 3.60 | 1.40 | 1.13 |
Degree of explanation (%) | 36.00 | 14.03 | 11.32 |