Table 2

Option item response, missing value rates (%), and Cohen’s kappa

OPTION scale itemStrongly agreeAgreeNeutralDisagreeStrongly disagreeMissing values (%)Kappa score*
*Kappa scores are for agreement across sum of “agree, neutral and disagree” scale points; scores in parentheses are kappa scores for 5-point scale agreement.
(1) The clinician identifies a problem(s) needing a decision making process49.533.111.04.31.30.80.61 (0.31)
(2) The clinician states that there is more than one way to deal with an identified problem (“equipoise”)6.23.25.413.471.00.80.82 (0.50)
(3) The clinician lists “options” including the choice of “no action” if feasible6.74.07.09.771.80.80.75 (0.51)
(4) The clinician explains the pros and cons of options to the patient (taking “no action” is an option)3.53.29.411.671.50.80.68 (0.43)
(5) The clinician checks the patient’s preferred information format (words/numbers/visual display)000.30.598.40.80.98 (0.98)
(6) The clinician explores the patient’s expectations (or ideas) about how the problem(s) are to be managed0.51.18.618.869.91.10.75 (0.34)
(7) The clinician explores the patient’s concerns (fears) about how problem(s) are to be managed1.34.612.122.059.10.80.53 (0.42)
(8) The clinician checks that the patient has understood the information0.81.135.226.934.91.10.38 (0.10)
(9) The clinician provides opportunities for the patient to ask questions1.93.240.117.236.01.60.20 (–0.08)
(10) The clinician asks for the patient’s preferred level of involvement in decision making0.81.34.08.184.90.80.86 (0.66)
(11) An opportunity for deferring a decision is provided1.12.44.87.583.30.80.83 (0.66)
(12) Arrangements are made to review the decision (or the deferment)19.47.835.25.430.90.80.58 (0.44)