| |
Standardized response mean
|
Cohen's effect size
|
Guyatt's effect size
|
Minimum detectable difference
|
Sample size requirement n (95% CL1)
|
|---|
|
Legacy PF-10
|
0.10
|
0.06
|
0.49
|
2.43
|
427 (345, 514)
|
|
Legacy HAQ
|
0.14
|
0.06
|
0.52
|
1.40
|
143 (113, 176)
|
|
Item-Improved PF-10
|
0.09
|
0.05
|
0.59
|
2.16
|
336 (245, 436)
|
|
Item-Improved HAQ
|
0.13
|
0.05
|
0.73
|
1.14
|
95 (76, 117)
|
|
PROMIS PF 10
|
0.13
|
0.05
|
0.52
|
1.47
|
157 (127, 189)
|
|
PROMIS PF 20
|
0.13
|
0.05
|
0.63
|
1.24
|
113 (90, 141)
|
- 1 Confidence Limits
- HAQ, health assessment questionnaire; Item-Improved, Changes to items intended to improve their performance by altering parameters such as time frame and response options while retaining the same item stem; PF, physical function; PROMIS, Patient-Reported Outcomes Measurement Information System.
