Table 3 Results of ‘known group’ comparisons
From: A review of the psychometric performance of the EQ-5D in people with urinary incontinence
Author(s), Year | Groups defined as | Instrument | Direction of change consistent across groups and consistent with clinical expectation? | Difference between groups statistically significant? |
|---|---|---|---|---|
Haywood et al, 2008 [7] | Number of episodes at baseline: | |||
EQ-5D | Yes‡ | No at p=0.01 | ||
Not at all | SSI | Yes | Yes, p<0.01 | |
A few days | I-QoL index | Yes | Yes, p<0.01 | |
Half the week | I-QoL domains | Mixed† | Yes, p<0.01 | |
Most days | ||||
Every day | ||||
Tincello et al, 2010 [19] | Episode frequency: | |||
<=7 per week | EQ-5D | Yes | Yes, p<0.0001 | |
7 to 13 per week | ||||
>=14 per week | ||||
Monz et al, 2005 [13] | Severity (reported for each subtype) | |||
Slight | EQ-5D | Yes | Not reported | |
Moderate | EQ-VAS | Yes | Not reported | |
Severe | Mean I-QoL | Yes | Not reported | |
Very severe | I-QoL domains | Yes | Not reported | |
Hawthorne, 2009 [2] | Continence status: | |||
a) None | EQ-5D | Yes | Yes, p<0.0001 | |
b) Slight/mild | SF-6D | Yes | Yes, p<0.0001 | |
c) Moderate | AQoL | Yes | Yes, p<0.0001 | |
d) Severe | AQoL-8 | Yes | Yes, p<0.0001 | |
Currie et al, 2006 [10] | Type of incontinence: | |||
General | EQ-5D | Stress<general<none* | Not reported | |
Stress | SF-36 | As for EQ-5D | As for EQ-5D | |
None | ||||
Monz et al, 2005 [13] | Subtype (reported for each severity category): | |||
EQ-5D | Stress>urge>mixed* | Not reported | ||
EQ-VAS | As for EQ-5D (except when severity slight) | Not reported | ||
Stress | ||||
Mean I-QoL | As for EQ-5D | Not reported | ||
Urge | I-QoL domains | No consistent pattern across all domains | Not reported | |
Mixed | ||||
Tincello et al, 2010 [19] | UI subtype: | |||
Mixed | EQ-5D | Stress>urge>mixed* | Yes, p<0.0001 | |
Pure stress | ||||
Pure urge |