Table 3.
Final Regression Model investigating Factors Associated with the Presence of Percentage Months of Reported Breathlessness during the Last Year of Life
| Coefficient | Standard Error | t | P>|t| | [95% Confidence Interval] | |
|---|---|---|---|---|---|
| Predictive factors from monthly interviews during the last year of life | |||||
| Depression* (Self report, present or absent) | 0.14 | 0.05 | 3.02 | 0.003 | 0.05 to 0.24 |
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| Mobility problems* (Self report, present or absent) | 0.07 | 0.02 | 3.85 | <0.001 | 0.03 to 0.11 |
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| Anxiety* (Self report, present or absent) | 0.25 | 0.05 | 5.24 | <0.001 | 0.16 to 0.34 |
| PREDICTIVE FACTORS FROM MOST RECENT COMPREHENSIVE ASSESSMENT PRIOR TO LAST YEAR OF LIFE | |||||
| Educational attainment | −0.47 | 0.17 | −2.76 | 0.006 | −0.80 to −0.13 |
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| Chronic lung disease | 6.62 | 1.18 | 5.62 | <0.001 | 4.31 to 8.94 |
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| Congestive heart failure | 3.34 | 1.34 | 2.50 | 0.013 | 0.71 to 5.97 |
| Condition leading to death | |||||
| Cancer | 3.25 | 1.53 | 2.12 | 0.034 | 0.24 to 6.25 |
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| Other condition | 3.64 | 1.71 | 2.12 | 0.034 | 0.27 to 7.00 |
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| Dementia | −0.81 | 1.49 | −0.54 | 0.586 | −3.75 to 2.12 |
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| Organ failure | 4.19 | 1.41 | 2.97 | 0.003 | 1.41 to 6.96 |
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| Sudden death | 0.32 | 3.26 | 0.10 | 0.923 | −6.08 to 6. |
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| Age one year prior to death | −0.19 | 0.09 | −2.17 | 0.030 | −0.37 to −0.02 |
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| Smoking status | |||||
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| Ex-smoker | 3.01 | 1.05 | 2.86 | 0.004 | 0.94 to 5.07 |
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| Never smokers | 1.28 | 2.17 | 0.59 | 0.554 | −2.97 to 5.54 |
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| constant | 16.48 | 8.02 | 2.06 | 0.73 to 32.24 | |
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*
percentage months reported during the last year of life
P = probability
For an explanation of the meaning of the co-efficient, see text