Validation of the prolapse quality of life questionnaire (P-QOL): an Afrikaans version in a South African population.

Abstract

Background. The prolapse quality-of-life questionnaire (P-QOL) has been validated and translated into eight languages. The lack of an Afrikaans version of the P-QOL limits studies in Afrikaans-speaking patients with pelvic organ prolapse (POP). Objective. To validate an Afrikaans version of the P-QOL in a South African population. Methods. The P-QOL was translated into Afrikaans by a medical translator and three gynaecologists. This descriptive study determined construct validity comparing 25 symptomatic (64.1%, n=39) and 14 asymptomatic (35.9%, n=39) participants' median domain scores. The POP stage was determined according to the POP quantification (POP-Q) scale and compared with their domain scores by means of percentages. A second P-QOL was completed and the stability determined by the test-retest method. The Cronbach alpha was used to determine internal consistency and the kappa value to determine measure of agreement. Results. Symptomatic participants had higher median domain scores than asymptomatic participants. All asymptomatic participants had stage 0 POP and 33.3% of symptomatic participants had stage III POP. Stability was good, with an average of above 50%. The mean Cronbach alpha value was 0.94 and the kappa value indicated moderate to good strength of agreement between items (к=0.41 -0.80). Conclusion. The Afrikaans P-QOL was found to be valid and reliable to determine quality of life in women with POP, correlating with the findings of other validation studies and supporting the evidence that the P-QOL is a high-quality disease-specific quality-of-life questionnaire.

Translation, transcultural adaptation, reliability and validation of the pelvic organ prolapse quality of life (P-QoL) in Amharic

“…Content validity was determined in a similar way as described by previous validation studies of the P-QoL [28, 29]. Emphasis was given to maintain the original context and meaning of the words rather than a direct word by word translation [42].…”

“…The grouping of questions in each domain was chosen because the questions related to a particular aspect of HRQoL [18]. It has been translated to and validated in several language including Turkish [20], Portuguese [21], German [22], Dutch [23], Thai [24], Slovakian [25], Brazilian [26], Persian [27], Spanish [28] and Afrikaans [29]. The initial validation and subsequent cross-validations have assessed psychometric properties (reliability, validity and responsiveness) and both reported as a reliable and valid instrument [18, 20–29].…”

Dysfunction, activity limitations, participation restriction and contextual factors in South African women with pelvic organ prolapse

“…This questionnaire has been shown to have good validity (Cronbach α > 0.80), inter-rater reliability ( p < 0.1, r > 0.5) and test–retest reliability ( r = 0.872) (Digesu et al 2005). It has also been validated in a South African population (Brandt, Van Rooyen & Cronje 2016).…”

Spanish Questionnaires for the Assessment of Pelvic Floor Dysfunctions in Women: A Systematic Review of the Structural Characteristics and Psychometric Properties

“…The test–retest reliability of the three questionnaires that evaluate the POP is high, being between 0.49 and 0.91 in the case of the EPIQ [ 14 ], 0.791 in the P-QoL [ 30 ] and 0.977 in the PIKQ [ 31 ]. However, in the case of the P-QoL questionnaire in relation to other versions [ 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 ], the majority of studies scored poorly for test–retest reliability largely due to the small sample sizes, poor description of test conditions, and poor stability of the retest sample.…”