Abstract
Purpose:
The purpose of this study was to identify the factors influencing medication adherence in hemodialysis patients among primary medical care and secondary medical care. Methods: A cross-sectional survey design was utilized. Data were collected using questionnaires from 280 hemodialysis patients who had taken prescribed medication regularly as a result of chronic renal failure at primary and secondary medical care in Korea. Data were analyzed using t-test, ANOVA, Pearson correlation coefficients, and multiple regression. Results: There were statistically significant differences in medication adherence according to living area (p=.002), health condition (p<.001), amount of medication (p=.004), inconvenience for taking medication (p<.001), and depression level (p=.001). The mean of medication adherence was 3.72 points. Medication adherence was explained by perceived barrier related to medication taking (β=.338), attitude (β=.250), and depression (β=.132). Conclusion: This study strongly recommended that nursing intervention program to improve medication adherence should be developed and a match control study in improvement of medication adherence for hemodialysis patients needs to be done.
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Table 1.
Medication Adherence according to General Characteristics (N=280)
Characteristics | Categories | n (%) | Medication adherence | ||
---|---|---|---|---|---|
M±SD | t or F | p | |||
Gender | Male | 166 (59.3) | 3.71±1.57 | 0.16 | .875 |
Female | 114 (40.7) | 3.71±1.56 | |||
Age (year) | 20~39 | 12 (4.3) | 2.82±1.81 | 2.92 | .056 |
40~64 | 164 (58.6) | 3.63±1.45 | |||
≥65 | 104 (37.1) | 3.87±1.51 | |||
Living status | Couple | 192 (68.6) | 3.81±1.46 | 1.23 | .300 |
Alone | 66 (23.6) | 3.43±1.61 | |||
Friends or caregiver | 22 (7.8) | 3.62±1.58 | |||
Living area | Metropolisa | 91 (32.5) | 3.78±1.59 | 6.27∗ | .002 |
Local small cityb | 64 (22.9) | 4.14±1.32 | b>a, c | ||
Rural areac | 125 (44.6) | 3.38±1.53 | |||
Education | Illiteracy | 32 (11.4) | 3.91±1.22 | 1.40 | .234 |
Elementary school | 57 (20.4) | 3.34±1.72 | |||
Middle school | 52 (18.6) | 3.92±1.69 | |||
High school | 103 (36.8) | 3.71±1.43 | |||
≥University | 36 (12.9) | 3.80±1.48 | |||
Occupation | Yes | 39 (13.9) | 3.72±1.59 | 0.14 | .888 |
No | 241 (86.1) | 3.72±1.58 | |||
Economic status | ≥Middle | 140 (50.0) | 3.81±1.51 | 1.24 | .544 |
Low | 140 (50.0) | 3.58±1.55 | |||
Experience of regular medication education program | Yes | 0 (0.0) | |||
No | 280 (100.0) | 3.73±1.52 |
Table 2.
Medication Adherence according to Illness-related Characteristics (N=280)
Characteristics | Categories | n (%) | M±SD | t or F | p |
---|---|---|---|---|---|
Period of hemodialysis (year) | <1 | 38 (13.6) | 4.18±1.20 | 2.11 | .100 |
≥1~<3 | 75 (26.8) | 3.81±1.61 | |||
≥3~<5 | 78 (27.9) | 3.73±1.40 | |||
≥5 | 89 (31.8) | 3.54±1.68 | |||
Perceived health status | Gooda | 44 (15.7) | 4.64±1.10 | 5.09∗ | <.001 |
Moderateb | 120 (42.9) | 3.68±1.62 | a>b, c | ||
Badc | 113 (40.3) | 3.37±1.51 | |||
No respond | 3 (1.1) | ||||
No. of chronic illness | 1 | 87 (31.1) | 3.51±1.60 | 2.46 | .087 |
2 | 121 (43.2) | 3.59±1.61 | |||
≥3 | 71 (25.4) | 4.03±1.32 | |||
No respond | 1 (0.4) | ||||
Frequency of medication administration | 1~2 | 93 (33.2) | 3.87±1.53 | 0.89 | .414 |
3 | 154 (55.0) | 3.63±1.60 | |||
4 | 30 (10.7) | 3.55±1.57 | |||
No respond | 3 (1.1) | ||||
Amount of medication (tablets/day) | <5a | 26 (9.3) | 4.04±1.39 | 1.89∗ | .004 |
6~10b | 88 (31.4) | 3.91±1.40 | a>c | ||
≥11c | 165 (58.9) | 3.58±1.59 | |||
No respond | 1 (0.4) | ||||
Assistance available for medication administration | Unavailable | 188 (67.1) | 3.61±1.58 | 0.28 | .830 |
Spouse | 62 (22.1) | 3.87±1.40 | |||
Offspring | 15 (5.4) | 3.71±1.32 | |||
Friends or caregiver | 14 (5.0) | 3.71±1.58 | |||
No respond | 1 (0.4) | ||||
Inconvenience for taking medication | Yes | 160 (57.1) | 3.38±1.56 | -3.71 | <.001 |
No | 116 (41.4) | 4.12±1.33 | |||
No respond | 4 (1.4) | ||||
Depression level | Normala | 67 (23.9) | 4.12±1.31 | 5.75 | .001 |
Milda | 47 (16.8) | 4.11±1.29 | a>b, c | ||
Moderateb | 56 (20.0) | 3.57±1.59 | |||
Severec | 105 (37.5) | 3.28±1.58 | |||
No respond | 5 (1.8) |
Table 3.
Medication Adherence & Factors related to Medication Taking (N=280)
Table 4.
Factors Influencing Medication Adherence (N=280)
Factors | B∗ | SE | β | t (p) |
---|---|---|---|---|
(Constant) | 3.11 | 0.42 | 7.41 (<.001) | |
Attitude | 0.19 | 0.04 | .25 | 4.34 (<.001) |
Perceived barrier | -0.27 | 0.05 | -.34 | -5.79 (<.001) |
Depression | -0.02 | 0.01 | -.13 | -2.49 (.013) |
Adjusted R2=.31, F=31.00, p<.001 |