Table A1.

Summary statistics for the 10 item PF scale and the Part 1 and Part 2 parallel ½ forms of the scale used to estimate score-level standard errors of measurement

PF Scale Item No.	Content	Item Mean	Part 1	Part 2
PF1	Vigorous activities	1.43	1
PF2	Moderate activities	1.86		1
PF7	Walking more than a mile	1.93		2
PF6	Bending, kneeling or stooping	1.97	2
PF4	Climbing several flights of stairs	2.09	3
PF3	Lifting or carrying groceries	2.13		3
PF8	Walking several blocks	2.18		4
PF5	Climbing one flight of stairs	2.47	4
PF9	Walking one block	2.50	5
PF10	Bathing or dressing yourself	2.66		5
Mean Score* (1–3) scaling		21.23	10.46	10.76
SD (1–3) scaling		5.86	2.90	3.10
Mean (Rescaled**)		56.14	27.3	28.8
SD (Rescaled)		29.13	14.5	15.5
Test-Retest reliability r(xx)		.890
Coefficient Alpha Reliability		.926	.853	.862
Pearson Correlation of Part 1 & 2 r(Part1, Part2)			.889

^*The mean score indicated the average score in the group where the score is defined as the sum of the 10 PF items for the full text and the 5 items in each of the part tests.

^**Rescaled scores are when the 1–3 scores are transformed to the 0–100 scale such that 1 = 0, 2 = 50 and 3 = 100.