TY - JOUR
T1 - Good reliability and validity for a new utility instrument measuring the birth experience, the Labor and Delivery Index
AU - Gärtner, Fania R.
AU - De Miranda, Esteriek
AU - Rijnders, Marlies E.
AU - Freeman, Liv M.
AU - Middeldorp, Johanna M.
AU - Bloemenkamp, Kitty W M
AU - Stiggelbout, Anne M.
AU - Van Den Akker-Van Marle, M. Elske
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Objectives To validate the Labor and Delivery Index (LADY-X), a new delivery-specific utility measure. Study Design and Setting In a test-retest design, women were surveyed online, 6 to 8 weeks postpartum and again 1 to 2 weeks later. For reliability testing, we assessed the standard error of measurement (S.E.M.) and the intraclass correlation coefficient (ICC). For construct validity, we tested hypotheses on the association with comparison instruments (Mackey Childbirth Satisfaction Rating Scale and Wijma Delivery Experience Questionnaire), both on domain and total score levels. We assessed known-group differences using eight obstetrical indicators: method and place of birth, induction, transfer, control over pain medication, complications concerning mother and child, and experienced control. Results The questionnaire was completed by 308 women, 257 (83%) completed the retest. The distribution of LADY-X scores was skewed. The reliability was good, as the ICC exceeded 0.80 and the S.E.M. was 0.76. Requirements for good construct validity were fulfilled: all hypotheses for convergent and divergent validity were confirmed, and six of eight hypotheses for known-group differences were confirmed as all differences were statistically significant (P-values:
AB - Objectives To validate the Labor and Delivery Index (LADY-X), a new delivery-specific utility measure. Study Design and Setting In a test-retest design, women were surveyed online, 6 to 8 weeks postpartum and again 1 to 2 weeks later. For reliability testing, we assessed the standard error of measurement (S.E.M.) and the intraclass correlation coefficient (ICC). For construct validity, we tested hypotheses on the association with comparison instruments (Mackey Childbirth Satisfaction Rating Scale and Wijma Delivery Experience Questionnaire), both on domain and total score levels. We assessed known-group differences using eight obstetrical indicators: method and place of birth, induction, transfer, control over pain medication, complications concerning mother and child, and experienced control. Results The questionnaire was completed by 308 women, 257 (83%) completed the retest. The distribution of LADY-X scores was skewed. The reliability was good, as the ICC exceeded 0.80 and the S.E.M. was 0.76. Requirements for good construct validity were fulfilled: all hypotheses for convergent and divergent validity were confirmed, and six of eight hypotheses for known-group differences were confirmed as all differences were statistically significant (P-values:
KW - Labor experiences
KW - Measurement properties
KW - Obstetrics
KW - Patient-reported outcome measure (PROM)
KW - Questionnaire
KW - Utility measure
UR - https://www.scopus.com/pages/publications/84941934641
U2 - 10.1016/j.jclinepi.2015.05.020
DO - 10.1016/j.jclinepi.2015.05.020
M3 - Article
C2 - 26115813
AN - SCOPUS:84941934641
SN - 0895-4356
VL - 68
SP - 1184
EP - 1194
JO - Journal of Clinical Epidemiology
JF - Journal of Clinical Epidemiology
IS - 10
ER -