Table 4. | Distribution of the PTF's morphology (left and right) by age group |
| Age (years) | Overall | P-value | |||
|---|---|---|---|---|---|
| 14 - 29 | 30 - 49 | 50+ | |||
| N (%) | N (%) | N (%) | N (%) | ||
| PTF morphology - right | |||||
| Type 1 (widely open) | 4 (21.1) | 19 (55.9) | 24 (45.3) | 47 (44.3) | 0.04a |
| Type 2 (narrow middle) | 8 (42.1) | 10 (29.4) | 10 (18.9) | 28 (26.4) | |
| Type 3 (very narrow/closed) | 7 (36.8) | 5 (14.7) | 19 (35.8) | 31 (29.2) | |
| PTF morphology - left | |||||
| Type 1 (widely open) | 5 (26.3) | 15 (44.1) | 18 (34) | 38 (35.8) | 0.596b |
| Type 2 (narrow middle) | 9 (47.4) | 14 (41.2) | 21 (39.6) | 44 (41.5) | |
| Type 3 (very narrow/closed) | 5 (26.3) | 5 (14.7) | 14 (26.4) | 24 (22.6) | |
| Total | 19 (100) | 34 (100) | 53 (100) | 106 (100) | |
aSignificant, Chi-square test (significance level P < 0.05).
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