Table 4.
Relationship between non-combined surgery and ptosis
| Combined surgery | Ptosis (3 months)
|
Total | |
|---|---|---|---|
| No (%) | Yes (%) | ||
| Non-combined | 87 (78.4) | 24 (21.6) | 111 |
| Combined | 43 (93.5) | 3 (6.5) | 46 |
| Total | 130 (82.8) | 27 (17.2) | 157 |
| Chi-square test1 | |||
|
| |||
| Value | df | Asymptotic significance (2-sided) | |
|
| |||
| Pearson chi-square | 5.207a | 1 | 0.022 |
| Continuity correctionb | 4.201 | 1 | 0.040 |
| Likelihood ratio | 6.046 | 1 | 0.014 |
| Linear-by-linear association | 5.174 | 1 | 0.023 |
| N of valid cases | 157 | ||
| Symmetric measures2 | |||
|
| |||
| Value | P<0.05 | ||
|
| |||
| Phi | 0.182 | 0.022 | |
| Cramer’s V | 0.182 | 0.022 | |
| N of valid cases | 157 | ||
Notes:
a
0 cells (0.0%) have expected count <5. The minimum expected count is 7.91.
b
Computed only for a 2×2 table.
1
Chi-square test: statistical method assessing the relationship between observed and expected categorical values.
2
Symmetric measures determine strength of relationship between the observed and expected categorical values.