Table 4.
Univariate and multivariate analyses of associations between “Perceived understanding”a and demographic factors.
| Univariate analysis |
Multivariate analysisc |
|||||
|---|---|---|---|---|---|---|
| Factor | N [%] | Mean (SD) | Mean difference (95% confidence interval) | P | Mean difference (95% confidence interval) | P |
| Age | ||||||
| <45 | 18 [18] | 85 (12.5) | Reference | Reference | ||
| 45–64 | 67 [67] | 86 (12.4) | 1 (−5 to 8) | 0.58 | 0 (−7 to 7) | 0.73 |
| ≥65 | 15 [15] | 83 (12.4) | −2 (−11 to 6) | 0.60b | −3 (−12 to 6) | 0.51b |
| Gender | ||||||
| Male | 16 [16] | 85 (10.4) | Reference | Reference | ||
| Female | 84 [84] | 86 (12.7) | 1 (−6 to 7) | 0.91 | −1 (−9 to 6) | 0.74 |
| Education | ||||||
| Elementary school | 18 [18] | 87 (12.1) | Reference | Reference | ||
| High school | 19 [19] | 90 (8.7) | 3 (−5 to 11) | 0.20 | 3 (−5 to 12) | 0.23 |
| University | 62 [62] | 84 (13.0) | −3 (−9 to 4) | 0.36b | −2 (−9 to 5) | 0.51b |
| Missing | 1 [1] | – | – | – | ||
| Living alone or not | ||||||
| Cohabitant | 70 [70] | 84 (12.2) | Reference | Reference | ||
| Alone | 29 [29] | 89 (11.6) | 5 (0–10) | 0.062 | 5 (−1 to 10) | 0.084 |
| Missing | 1 [1] | – | – | – | ||
| Randomized study or not | ||||||
| Not randomized | 21 [21] | 89 (11.0) | Reference | Reference | ||
| Randomized | 79 [79] | 85 (12.6) | −4 (−10 to 2) | 0.24 | −3 (−9 to 3) | 0.32 |
| Total number of patients in the study with information on knowledge | 100 | 86 (12.4) | ||||
Linear regression was used to estimate mean differences and confidence intervals. All reported p-values are two-sided and based on the Wald test.
a
Part B. Total number of questions included 13 (out of 14). Answer to questions are coded 1,2,3,4,5 and are assigned scores of 0, 25, 50, 75 and 100.
b
Test for linear trend.
c
Adjusted for all other listed factors.