| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sleep apnea etiology ncbi | 0.45 | 1 | 2638 | 86 | 25 |
| sleep | 1.45 | 0.5 | 4116 | 21 | 5 |
| apnea | 0.67 | 0.6 | 4132 | 88 | 5 |
| etiology | 1.49 | 1 | 2352 | 77 | 8 |
| ncbi | 0.26 | 0.7 | 6376 | 39 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sleep apnea etiology ncbi | 0.07 | 1 | 992 | 77 |
| obstructive sleep apnea etiology ncbi | 1.08 | 0.2 | 1991 | 51 |
| etiology of sleep apnea | 0.04 | 1 | 2951 | 9 |
| central sleep apnea ncbi | 0.09 | 0.7 | 3038 | 57 |
| etiology of central sleep apnea | 1.86 | 0.4 | 6626 | 70 |
| obstructive sleep apnea etiology nih | 1.3 | 0.7 | 6553 | 82 |
| sleep apnea etiology peer reviewed | 0.88 | 0.6 | 769 | 88 |
| pathology of sleep apnea | 1.44 | 0.7 | 3434 | 75 |
| neurological causes of sleep apnea | 1.36 | 0.2 | 7098 | 55 |
| obstructive sleep apnea ncbi | 0.15 | 0.5 | 1925 | 79 |
| etiology of obstructive sleep apnea | 1.29 | 1 | 9653 | 14 |
| sleep apnea caused by | 1.1 | 0.3 | 5456 | 38 |
| sleep apnea caused by chronic | 0.71 | 0.5 | 7210 | 44 |
| scholarly articles on sleep apnea | 1.23 | 0.7 | 7361 | 3 |
| sleep apnea causes and treatments | 1.47 | 0.1 | 2509 | 5 |
| medical conditions attributed to sleep apnea | 0.26 | 0.9 | 881 | 36 |
| what is associated with sleep apnea | 0.29 | 0.9 | 7173 | 79 |
| articles on sleep apnea | 0.81 | 0.2 | 5707 | 94 |
| neurological causes of central sleep apnea | 1.99 | 0.5 | 238 | 4 |
| pathophysiology of sleep apnea | 0.48 | 0.8 | 6191 | 90 |
| sleep apnea research article | 0.41 | 0.6 | 2196 | 12 |
