Table 2.
Preoperative, postoperative objective assessment of laser and conventional group (vocal cord polyp) (x̅±s)
| Laser group | Cold instruments group | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
||||||||||||
| Time | Jitt (%) | PPQ (%) | Shim (%) | APQ (%) | NHR | MPT, s | Jitt (%) | PPQ (%) | Shim (%) | APQ (%) | NHR | MPT, s |
| Before surgery | 5.51±1.04 | 3.11±0.37 | 8.37±1.21 | 7.21±1.76 | 0.48±0.11 | 9.6±1.2 | 5.60±1.15 | 3.22±0.45 | 8.15±2.05 | 7.39±1.70 | 0.50±0.13 | 9.9±2.1 |
| After surgery 1 week | 4.28±1.02 | 2.87±0.48 | 5.32±1.05* | 4.91±0.87* | 0.43±0.09 | 11.9±2.1* | 3.88±1.85* | 2.79±0.68 | 4.36±2.55* | 3.76±1.07* | 0.31±0.09* | 11.3±3.9* |
| After surgery 1 month | 3.25±0.65* | 1.30±0.50# | 3.26±0.75# | 3.65±0.58# | 0.29±0.07# | 13.8±3.2# | 3.15±0.62# | 1.27±0.50# | 3.56±0.96# | 3.71±0.78# | 0.27±0.08# | 14.0±2.6# |
| After surgery 3 months | 1.73±0.52# | 0.58±0.14# | 3.24±0.89# | 3.43±0.63# | 0.21±0.03# | 15.2±3.4# | 1.68±0.49# | 0.61±0.34# | 3.14±0.65* | 3.03±0.72# | 0.26±0.03# | 15.7±3.2# |
| P value | 0.001 | 0.001 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.162 | 0.000 |
Note: Compared with the preoperative;
*
P < 0.05;
#
P < 0.01.