Table 2.

Rasch fit statistics and METS values for the 21 UCSD physical activity items

Item	Logit	MNSQ Infit	MNSQ Outfit	METS
While eating	1.72±0.11	1.03	0.98	1.5
At rest	1.61±0.12	1.04	0.99	1.0
Standing up from chair	1.51±0.10	1.28	1.53	1.3–1.8
Dressing	1.46±0.10	0.96	1.79	2.0–2.5
Doing dishes	1.28±0.09	0.76	0.86	1.8–2.5
Brushing teeth	1.23±0.11	0.85	0.73	2.0
Shaving and/or brushing hair	1.19±0.11	0.88	0.85	2.0
Showering / bathing	0.69±0.09	0.96	0.96	2.0
Doing laundry	0.26±0.08	0.71	0.71	2.0–2.3
Shopping	−0.01±0.08	0.82	0.83	2.3
Picking up and straightening	−0.06±0.09	0.79	0.79	2.5
Making bed	−0.33±0.09	0.65	0.64	3.3
Watering lawn	−0.34±0.08	1.13	1.07	1.5–3.0
Sweeping / vacuuming	−0.42±0.08	0.74	0.73	2.3–3.8
Walk on the level at your own pace	−0.65±0.10	1.05	1.03	2.0–3.5
Walk on the level with others your own age	−0.89±0.08	1.12	1.17	2.5–4.3
Sexual activities	−0.93±0.08	1.50	1.46	1.8–2.8
Washing car	−1.32±0.08	0.78	0.75	3.5
Mowing lawn	−1.59±0.08	1.65	1.93	5.5
Walking up stairs	−2.19±0.10	1.24	1.36	4.0–8.0
Walking up a hill	−2.21±0.10	1.23	1.37	6.3–7.3

MNSQ=mean square; METS=metabolic equivalents.