| normal contraction duration | 0.1 | 0.7 | 5889 | 27 | 66 |
| normal contraction frequency and duration | 0.1 | 0.4 | 1847 | 41 | 84 |
| frequency vs duration of contractions | 1.6 | 0.6 | 684 | 37 | 31 |
| normal labor contraction frequency | 0.81 | 0.3 | 1890 | 34 | 59 |
| normal duration of contractions | 1.65 | 1 | 1390 | 31 | 80 |
| what is the contraction frequency | 1.42 | 0.9 | 6228 | 33 | 46 |
| frequency duration intensity of contractions | 0.79 | 0.6 | 867 | 44 | 84 |
| the frequency of contractions is timed from | 0.25 | 0.6 | 3340 | 43 | 27 |
| normal length of contractions | 1.15 | 0.6 | 6129 | 29 | 78 |
| what are normal contractions | 0.68 | 0.1 | 6511 | 28 | 12 |
| frequency of contractions in labor | 0.85 | 1 | 8354 | 34 | 44 |
| normal number of contractions in 10 minutes | 1.7 | 0.7 | 3148 | 43 | 71 |
| when determining frequency of contractions | 0.08 | 0.1 | 7639 | 42 | 26 |
| contraction frequency labor stage | 1.04 | 0.9 | 7383 | 33 | 98 |
| normal contractions in 10 minutes | 0.18 | 0.3 | 51 | 33 | 14 |
| normal intensity of contraction during labor | 1.09 | 0.7 | 9622 | 44 | 43 |
