TABLE 2.
Lip‐seal strength according to age
| Lip‐seal strength (N) | 20–29 (O:130, M:70, F:60) | 30–39 (O:73, M:42, F:31) | 40–49 (O:40, M:20, F:20) | 50–59 (O:30, M:10, F:20) | 60–69 (O:24, M:10, F:14) | 70–79 (O:23, M:10, F:13) | 80–89 (O:16, M:6, F:10) | 90–99 (O:3, M:2, F:1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | Median (Q1, Q3) | Mean (SD) | Median (Q1, Q3) | Mean (SD) | Median (Q1, Q3) | Mean (SD) | Median (Q1, Q3) | Mean (SD) | Median (Q1, Q3) | Mean (SD) | Median (Q1, Q3) | Mean (SD) | Median (Q1, Q3) | Mean (SD) | Median (Q1, Q3) | p value | |
| Overall | 10.8 (3.5) | 10.4 (8.1, 13.2) | 11.6 (2.9) | 11.2 (9.5, 13) | 12.4 (3.9) | 11.7 (9.0, 15.7) | 11.4 (3.2) | 10.9 (9.3, 12.8) | 11.7 (3.3) | 11 (9.6, 13.4) | 9.9 (3.3) | 9.6 (7.5, 12.4) | 10.8 (3.3) | 10.6 (8, 12.4) | 10.6 (3.2) | 11.6 (−, −) | 0.407 |
| Men | 12.1 (3.6) | 12.5 (9.2, 14.3) | 12.0 (3.0) | 11.4 (9.4, 13.9) | 13.7 (4.0) | 14.1 (10.8, 17.4) | 12.1 (3.2) | 11.4 (9.6, 13.2) | 12.3 (3.4) | 11.7 (10.2, 15.4) | 11.6 (3.3) | 11.1 (8.9, 14.0) | 11.6 (4.1) | 10.2 (8.2, 16.1) | 12.4 (1.1) | 12.3 (−, −) | 0.965 |
| Women | 9.2 (2.7) | 8.7 (7.1, 10.7) | 11.1 (2.7) | 11 (9.5, 12.3) | 11 (3.3) | 10.4 (8.7, 12.4) | 11.1 (3.2) | 10.6 (8.8, 12.9) | 11.3 (3.3) | 10.8 (9.4, 13.2) | 8.7 (2.9) | 8.1 (6.6, 10.9) | 10.4 (2.9) | 10.6 (7.6, 12.3) | 7.1 (0.0) | 7.1 (−, −) | 0.047 |
Note: The lip‐seal strength slightly decreased with age in women. In men, the lip‐seal strength did not decrease with age.
Abbreviations: Q1, first quartile; Q3, third quartile; SD, standard deviation.