A Revised Version of Diabetes Quality of Life Instrument Maintaining Domains for Satisfaction, Impact, and Worry

Table 1

The evaluation of the original DQoL items based on content validity, missing values and issue of redundancy.

Domain/items	Missing/“does not apply” > 10%	Duplicate	Decision
Domain: satisfaction
(1 = very satisfied; 2 = moderately satisfied; 3 = neither; 4 = moderately dissatisfied; 5 = very dissatisfied); “How satisfied are you”
(S5) … with the flexibility you have in your diet?	No	Yes (I9)	Drop
(S6) … with the burden your diabetes is placing on your family?	No	Yes (I5)	Drop
(S8) … with your sleep?	No	Yes (I6)	Drop
(S9) … with your social relationships and friendships?	No	Yes (I7)	Drop
(S10) … with your sex life?	Yes	No	Drop
(S11) … with your work, school, and household activities?	Yes	Yes (I13, W6)	Drop
(S13) … with the time you spend exercising?	No	Yes (I12)	Drop
(S14) … with your leisure time?	No	Yes (I15)	Drop
Domain: impact
(1 =never; 2 = very seldom; 3 = sometimes; 4 = often; 5 = all the time); “How often do”
(I3) … you have low blood sugar?	No	No	Drop
(I10) … your diabetes interfere with your sex life?	Yes	Yes (S10)	Drop
(I11) … your diabetes keep you from driving a car or using a machine (e.g., a typewriter)?	Yes	No	Drop
(I14) … you find yourself explaining what it means to have diabetes?	No	Yes (I16)	Drop
(I16) … you tell others about your diabetes?	No	Yes (I14)	Drop
(I19) … you find that you eat something you should not rather than tell someone that you have diabetes?	No	No	Drop
(I20) … you hide from others the fact that you are having an insulin reaction?	Yes	No	Drop
Domain: worry
(0 = does not apply; 1 = never; 2 = very seldom; 3 = sometimes; 4 = often; 5 = all the time); “How often do you worry about whether you”
(W1) … will get married?	Yes	No	Drop
(W2) … will have children?	Yes	No	Drop
(W3) … will not get a job you want?	Yes	No	Drop
(W4) … will be denied insurance?	Yes	No	Drop
(W5) … will be able to complete your education?	Yes	No	Drop
(W6) … will miss work?	Yes	Yes (S11, I13)	Drop
(W7) … will be able to take a vacation or a trip?	Yes	No	Drop
(W11) … will have someone who will not go out with you because you have diabetes?	Yes	No	Drop