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Table 2 Results of Exploratory Factor Analysis (n = 253)

From: Chinese health literacy scale for tuberculosis patients: a study on development and psychometric testing

Items

Factors

1

2

3

4

Factor 1 (F1): Remembering 1 (Words for TB-related drug names and main symptoms, 10 items)

 A11

Rifampicin

.742

   

 A3

Cough with blood

.727

   

 A2

Expectoration

.709

   

 A12

Bloody sputum

.673

   

 A4

Fever

.640

   

 A14

Respiratory infectious disease

.629

   

 A10

Isoniazid

.626

   

 A9

Tuberculosis

.549

   

 A16

Chemotherapy of tuberculosis

.513

   

 A1

Cough

.453

   

Factor 2 (F2): Remembering 2 (Words for TB-related treatment and care adherence, 6 items)

 A8

Follow up

 

.755

  

 A7

Reexamination

 

.743

  

 A13

Sputum examination

 

.723

  

 A15

Close contact check

 

.676

  

 A6

Misses a dose

 

.568

  

 A5

Night sweats

 

.497

  

Factor 3 (F3): Understanding and Applying (Contexts for TB-related treatment and follow-up, 6 items)

 B14

If you go for the follow-up on April 16, 2017, what time should you leave your night sputum?

  

.608

 

 B10

If there is a confirmed smear-positive pulmonary tuberculosis patients, what should he do with his own sputum?

  

.603

 

 B8

If a patient receiving an anti-tuberculosis chemotherapy has nausea and vomiting during the medication, but has not yet reviewed the time, what should the patient do?

  

.556

 

 B5

If you run out of drugs on April 12, 2017, what time should you go to the hospital to review and receive the medicine?

  

.541

 

 B7

If a patient who has received anti-tuberculosis chemotherapy for two months, his tuberculosis symptoms have basically disappeared, may he be able to reduce or disable the drug?

  

.539

 

 B9

Assume a smear-positive tuberculosis patients, his family appears the symptoms of coughing, sputum, etc., do you think his family should go to the hospital for further examination?

  

.463

 

Factor 4 (F4): Analysing (Ability for TB patients to calculate and analyze, 7 items)

 B2

How many times should you take your medication every day?

   

.667

 B4

How long this drug could be taken?

   

.643

 B1

If you have a breakfast at 7:00 and should take the medication before a meal, what time do you have to take the medication?

   

.575

 B11

Assume a patient who is in an infectious phase, could you tell me which of the following is wrong with him?

   

.570

 B12

How many times do you need to check your sputum during the treatment of tuberculosis?

   

.564

 B3

If your weight is 60 kg, how many tablets should you take each time?

   

.550

 B13

If you are the first treatment of tuberculosis patients, what first time should you send sputum to review?

   

.447

 Eigenvalues

4.672

3.894

3.185

2.898

 % of variance

15.070

12.562

10.274

9.347

 Cumulative%

15.070

27.632

37.906

47.254