Research Article
The Effect of Rhythmic Breathing on the Severity of Sternotomy Pain after Coronary Artery Bypass Graft Surgery: A Randomized Controlled Clinical Trial
Table 4
The comparison of mean differences scores of the pain severity before and after intervention in the RB and control groups.
| Day | Measurement times | Groups | Mean ± SD | Min | Max | value |
| Fist day | 9 a.m. | RB | 1.3 ± 0.59 | 1 | 3 | t(45.5) = 2.24, = 0.028 | Control | 0.8 ± 1.06 | 0 | 4 | 9 p.m. | RB | 1.23 ± 0.56 | 1 | 3 | t(58) = 5.67, < 0.001 | Control | 0.36 ± 0.61 | 0 | 2 |
| Second day | 9 a.m. | RB | 1.06 ± 0.25 | 1 | 2 | t(32.9) = 3.45, = 0.002 | Control | 0.43 ± 0.97 | 0 | 3 | 9 p.m. | RB | 1/0 ± 0.0 | 1 | 1 | t(29) = 20.15, < 0.001 | Control | 0.06 ± 0.25 | 0 | 1 |
| Third day | 9 a.m. | RB | 1.03 ± 0.18 | 1 | 2 | t(58) = 21.2, < 0.001 | Control | 0.03 ± 0.18 | 0 | 1 | 9 p.m. | RB | 1.06 ± 0.25 | 1 | 2 | t(29) = 23, < 0.001 | Control | 0.0 ± 0.0 | 0 | 0 |
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RB : rhythmic breathing; SD: standard deviation; Min : minimum; Max : maximum; independent t-test. |