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Table 4 Descriptive statistics of items and internal consistency of scales (n = 1993)

From: Towards a comprehensive, person-centred assessment of health literacy: translation, cultural adaptation and psychometric test of the Dutch Health Literacy Questionnaire

1. Feeling understood and supported by healthcare providers – Alpha = 0.91 (N = 1895)
  Mean (sd) Floor/ceiling effects Item-total correlation Item-remainder correlation Alpha if item is deleted
I have at least one healthcare provider who … 3.0 Ceiling 0.88 0.77 0.89
I have at least one healthcare provider I can … 3.0 No 0.90 0.82 0.87
I have the healthcare providers I need … 2.9 No 0.85 0.73 0.90
I can rely on at least one … 3.0 No 0.92 0.85 0.86
2. Having sufficient information to manage my health – Alpha = 0.89 (N = 1895)
I feel I have good information about health … 3.0 No 0.82 0.67 0.89
I have enough information to help me deal … 3.0 No 0.88 0.79 0.85
I am sure I have all the information I … 2.8 No 0.89 0.79 0.85
I have all the information I need to … 2.9 No 0.89 0.80 0.85
3. Actively managing my health – Alpha = 0.86 (N = 1897)
I spend quite a lot of time actively managing … 2.6 No 0.72 0.56 0.86
I make plans for what I need to do to be … 2.9 No 0.83 0.72 0.82
Despite other things in my life, I make time … 2.8 No 0.84 0.74 0.81
I set my own goals about health and fitness … 3.0 No 0.75 0.60 0.85
There are things that I do regularly … 2.9 No 0.86 0.77 0.81
4. Social support for health – Alpha = 0.86 (N = 1913)
I can get access to several people who … 2.9 No 0.84 0.74 0.82
When I feel ill, the people around me really … 2.7 No 0.75 0.60 0.86
If I need help, I have plenty of people I.. 2.9 No 0.87 0.78 0.81
I have at least one person … . 3.1 Ceiling 0.72 0.56 0.87
I have strong support from … 2.9 Ceiling 0.85 0.76 0.82
5. Appraisal of health information– Alpha = 0.83 (N = 1898)
I compare health information from different … 2.7 No 0.80 0.67 0.78
When I see new information about health, I … 2.6 No 0.79 0.65 0.79
I always compare health information from … 2.6 No 0.86 0.77 0.75
I know how to find out if the health … 2.8 No 0.69 0.50 0.83
I ask healthcare providers about the quality … 2.5 No 0.72 0.55 0.82
6. Ability to actively engage with healthcare providers– Alpha = 0.94 (N = 1882)
Make sure that healthcare providers understand.. 3.9 No 0.87 0.79 0.93
Feel able to discuss your health concerns... 4.0 Ceiling 0.91 0.85 0.92
Have good discussions about your health … 4.0 Ceiling 0.88 0.82 0.92
Discuss things with healthcare providers … 4.0 Ceiling 0.89 0.83 0.92
Ask healthcare providers to get … 4.0 Ceiling 0.90 0.85 0.92
7. Navigating the healthcare system– Alpha = 0.93 (N = 1875)
Find the right healthcare... 3.9 Ceiling 0.85 0.78 0.92
Get to see the healthcare provider you need to.. 4.0 Ceiling 0.83 0.75 0.92
Decide which health care provider you need … 3.9 Ceiling 0.89 0.83 0.91
Make sure you find the right place to get … 4.0 Ceiling 0.89 0.83 0.91
Find out what healthcare services you are … 3.6 No 0.82 0.74 0.92
Work out what is the best care for you … 3.8 No 0.87 0.80 0.91
8. Ability to find good health information– Alpha = 0.93 (N = 1881)
Find information about health problems … 4.0 Ceiling 0.88 0.82 0.92
Find health information from several … 3.9 Ceiling 0.91 0.86 0.91
Get information about health so you are … 3.9 No 0.89 0.82 0.92
Get health information in words you … 4.1 Ceiling 0.84 0.75 0.93
Get health information by yourself … 3.9 Ceiling 0.90 0.85 0.91
9. Understanding health information well enough to know what to do– Alpha = 0.91 (N = 1884)
Confidently fill medical forms in the correct … 4.0 Ceiling 0.86 0.78 0.88
Accurately follow the instructions from … 4.0 Ceiling 0.78 0.66 0.91
Read and understand written health … 4.0 Ceiling 0.87 0.79 0.88
Read and understand all the information on … 4.0 Ceiling 0.85 0.77 0.89
Understand what healthcare providers are … 4.1 Ceiling 0.90 0.84 0.87