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Table 2 Coefficients of direct effect and total effect and the results of bootstrapping method

From: The mediating factors in the relationship between lower urinary tract symptoms and health-related quality of life

  Coefficient a Coefficient b Coefficient c’ (direct effect) Total effect C Indirect effect Bias corrected 95% CI Effect size
Point estimate SE Lower Upper
Depression
 IIQ-7 0.162* (0.082, 0.235) 0.304* (0.156, 0.456) 0.189* (0.105, 0.273) 0.238* (0.144, 0.326) 0.049 0.018 0.020 0.090 0.207
 SF-12 v2 PCS 0.162* (0.078, 0.237) − 0.312 (− 0.711, 0.090) − 0.333* (− 0.568, − 0.093) − 0.383* (− 0.613, − 0.133) − 0.051 0.035 − 0.129 0.011 0.132
Anxiety
 IIQ-7 0.138* (0.078, 0.195) 0.289* (0.114, 0.503) 0.198* (0.116, 0.283) 0.238* (0.144, 0.326) 0.040 0.017 0.014 0.079 0.167
 SF-12 v2 PCS 0.138* (0.079, 0.195) − 0.288 (− 0.932, 0.297) − 0.344* (− 0.596, − 0.109) − 0.383* (− 0.613, − 0.133) − 0.040 0.046 − 0.142 0.038 0.103
Stress
 IIQ-7 0.191* (0.134, 0.255) 0.219* (0.085, 0.386) 0.196* (0.109, 0.285) 0.238* (0.144, 0.326) 0.042 0.017 0.016 0.083 0.176
 SF-12 v2 PCS 0.191* (0.135, 0.255) − 0.140 (− 0.543, 0.287) − 0.356* (− 0.609, − 0.107) − 0.383* (− 0.613, − 0.133) − 0.027 0.042 − 0.111 0.054 0.070
  1. IIQ-7 Incontinence Impact Questionnaire-7, SE standard error, CI confidence interval
  2. * Significant with P < 0.05