Table 3.
The unadjusted and adjusted within-pair association of the Impact of Events Scale and temporomandibular pain in female monozygotic and dizygotic twins
| Monozygotic4 Within-pair | Dizygotic5 Within-pair | |||
|---|---|---|---|---|
| Impact of Events Scale1 | OR2 | 95% CI3 | OR | 95% CI |
| Unadjusted | ||||
| Lowest tercile | 1.0 | -- | 1.0 | -- |
| Middle tercile | 1.1 | 0.6-2.1 | 1.3 | 0.4-3.8 |
| Highest tercile | 1.7 | 0.8-3.2 | 3.8 | 1.3-11.2 |
| Ptrend=0.11 | Ptrend < 0.01 | |||
| P within (MZ) vs. within (DZ) = 0.18 | ||||
| Adjusted for sociodemographic characteristics,6 depression, and chronic widespread pain | ||||
| Lowest tercile | 1.0 | -- | 1.0 | -- |
| Middle tercile | 1.0 | 0.5-1.9 | 0.9 | 0.3-2.7 |
| Highest tercile | 1.4 | 0.7-2.7 | 2.7 | 0.9-7.9 |
| Ptrend = 0.30 | Ptrend = 0.03 | |||
| P within (MZ) vs. within (DZ) = 0.13 | ||||
1
Impact of Events Scale: lowest tercile = 0-10, middle tercile = 11 - 27, highest tercile = 28 - 55
2
OR = odds ratio
3
CI = confidence interval
4
MZ = monozygotic
5
DZ = dizygotic
6
age, marital status, education, and race.