Appendix Table 2.

Frequency of job involving different physical activities

How often does your job involve…	Overall (n=636)
	Always		Often		Sometimes		Seldom		Never		Missing
	n	%	n	%	n	%	n	%	n	%	n	%
Squatting	17	2.7%	38	6.0%	97	15.3%	149	23.4%	273	42.9%	62	9.7%
Standing	113	17.8%	198	31.1%	184	28.9%	52	8.2%	37	5.8%	52	8.2%
Lifting	21	3.3%	47	7.4%	130	20.4%	186	29.2%	181	28.5%	71	11.2%
Walking	157	24.7%	204	32.1%	148	23.3%	39	6.1%	33	5.2%	55	8.6%
Sitting	247	38.8%	246	38.7%	63	9.9%	23	3.6%	5	0.8%	52	8.2%
How often does your job involve…	Total Hip Arthroplasty (n=325)
	Always		Often		Sometimes		Seldom		Never		Missing
	n	%	n	%	n	%	n	%	n	%	n	%
Squatting	10	3.1%	18	5.5%	53	16.3%	80	24.6%	136	41.8%	28	8.6%
Standing	59	18.2%	111	34.2%	92	28.3%	23	7.1%	15	4.6%	25	7.7%
Lifting	12	3.7%	23	7.1%	71	21.8%	92	28.3%	95	29.2%	32	9.8%
Walking	87	26.8%	101	31.1%	78	24.0%	16	4.9%	17	5.2%	26	8.0%
Sitting	132	40.6%	124	38.2%	32	9.8%	9	2.8%	4	1.2%	24	7.4%
How often does your job involve…	Total Knee Arthroplasty (n=311)
	Always		Often		Sometimes		Seldom		Never		Missing
	n	%	n	%	n	%	n	%	n	%	n	%
Squatting	7	2.2%	20	6.2%	44	13.5%	69	21.2%	137	42.2%	34	10.5%
Standing	54	16.6%	87	26.8%	92	28.3%	29	8.9%	22	6.8%	27	8.3%
Lifting	9	2.8%	24	7.4%	59	18.2%	94	28.9%	86	26.5%	39	12.0%
Walking	70	21.5%	103	31.7%	70	21.5%	23	7.1%	16	4.9%	29	8.9%
Sitting	115	35.4%	122	37.5%	31	9.5%	14	4.3%	1	0.3%	28	8.6%