The mean (SD) age of the sample was 53.2 (15.7) years; 45% (n=70) were female; 78% were white, 7% were black, 5% were
American Indian, and 10% were “other” or more than one race. Twenty-five per cent were Hispanic. Approximately 26% of participants (n=41) had a diagnosis of COPD, 28% (n=43) had asthma, 10% (n=16) had heart failure, 16% (n=25) had pneumonia, and 19% (n Inhibitors,research,lifescience,medical =29) had other cardiopulmonary diagnoses. The component structure and domains for the MDP recall ratings were the same as reported previously [28] for the “now” ratings in these ED patients. For the three recall administrations, the Immediate Perception domain (7 items; Cronbach’s α=.89 to .94) and Emotional Response domain (5 items: Cronbach’s α=.81 to .85) jointly accounted for 63% to 71% of item variance (see www.selleckchem.com/products/Hesperadin.html Additional file 1: Table A1 — Principal components analysis). Means,
SDs, and quartiles for the MDP items and the two mean domain scores for each recall time period are shown in Inhibitors,research,lifescience,medical Table Table1.1. Means for the Immediate Perception items were consistently higher than for the Emotional Response items in all three recall assessments (Table (Table1).1). The mean domain scores were approximately 2 scale points higher for the Immediate Perception domain compared with the Emotional Response domain in each recall assessment Inhibitors,research,lifescience,medical (Table (Table2).2). The Time 0a recall ratings and the concurrently obtained Time 1 “now” ratings were moderately and positively correlated for all items (Immediate Perception items: r=.30 to .45, p<.001; Emotional Response items: r=.46 to .60, p<.001) and domain scores (r=.42, p<.001 for Immediate Perception; r=.61, p<.001 for Emotional Response). Table 1 Descriptive statistics Inhibitors,research,lifescience,medical for recall rating: how breathing felt “when you decided to come Inhibitors,research,lifescience,medical to the ED” Table 2 Within-subjects differences in mean scores for Immediate Perception vs. Emotional Response domains Test–retest ICCs between recall ratings for the approximate 1-hour interval between Times 0a and 0b (Table (Table3)3) ranged from .69 to .86 for the individual items and .92 to .94 for the
two domains. For the 4- to 6-week interval between the initial recall rating and the follow-up visit, ICCs were much lower (.28 to .66 for individual items and.72 to .78 for the two domains). Examination of 95% CIs around ICCs for the two test–retest Rutecarpine intervals showed no overlap; therefore, all ICCs were significantly lower for the longer test–retest interval. Table 3 Test–retest reliability of MDP recall ratings (single items and domains) For the test–retest interval during the ED visit (Time 0a to 0b; Figure Figure1),1), mean differences for individual items ranged from −0.02 to +0.57 points, with all but two falling between 0.1 and 0.5 points. The mean differences for the two mean domain scores were approximately +0.3 points for Immediate Perception and EmotionalResponse.
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