Table 2.
Numbers of ISQ-influencing factors per study and statistical methods used.
| The number of ISQ influencing factors involved in each publication | References | Statistical Methods |
|---|---|---|
| 3 | 5 (13, 41, 46, 52, 55) | Pearson's correlation, multiple regression analysis |
| 4 | 4 (12, 24, 84, 85) | Mann-Whitney U tests |
| 5 | 3 (19, 23, 89) | Tukey, two-way ANOVA |
| 6 | 3 (15, 16, 97) | Mixed effects model, Pearson's correlation, stepwise multiple regression test, ANOVA method, Kaplan–Meier survival analysis |
| 7 | 1 (28) | Shapiro–Wilk W-test, t-test, ANOVA with post hoc Tukey HSD test |
| 8 | 2 (9, 39) | A mixed effects model, t-test and ANOVA method |
| 9 | 1 (8) | Pearson correlation, t-test, stepwise multiple regression, chi-squared test |
| 10 | 1 (11) | Kruskal–Wallis test, Multivariate linear analysis |