Table 2.

SPDI of the affected shoulder between two groups.

		Before matching			After matching
Variable	Time points	Group M (n = 60)	Group MS (n = 81)	P	Group M (n = 44)	Group MS (n = 44)	P
Pain	At inclusion	60.4 ± 11.6	58.3 ± 14.8	.357	58.2 ± 10.6	60.6 ± 14.2	.360
	1 week after first intervention	39.9 ± 12.0	32.5 ± 11.2	.001	36.4 ± 9.2	31.4 ± 10.3	.018
	2 weeks after first intervention	33.5 ± 10.9	29.6 ± 10.3	.034	30.7 ± 9.4	29.3 ± 9.5	.493
	4 weeks after first intervention	23.3 ± 10.1	20.5 ± 10.1	.104	21.3 ± 9.0	20.7 ± 8.7	.746
Disability	At inclusion	66.5 ± 12.2	65.4 ± 11.0	.590	66.2 ± 11.9	67.0 ± 10.7	.725
	1 week after first intervention	40.1 ± 13.6	37.1 ± 12.0	.164	37.7 ± 12.3	37.5 ± 12.4	.940
	2 weeks after first intervention	35.7 ± 13.5	30.0 ± 11.7	.009	32.6 ± 11.5	29.9 ± 11.4	.261
	4 weeks after first intervention	29.1 ± 12.7	25.6 ± 12.6	.104	26.6 ± 11.2	25.8 ± 10.9	.746
Total	At inclusion	64.1 ± 7.9	62.7 ± 8.5	.307	63.1 ± 7.7	64.5 ± 8.2	.389
	1 week after first intervention	39.7 ± 10.9	35.3 ± 9.7	.014	37.2 ± 8.9	35.1 ± 10.3	.321
	2 weeks after first intervention	34.8 ± 10.7	29.9 ± 9.2	.004	31.9 ± 8.3	29.7 ± 9.3	.238
	4 weeks after first intervention	26.9 ± 11.7	23.6 ± 11.7	.104	24.6 ± 10.3	23.9 ± 10.1	.746

Data are present as mean ± standard deviation. Group M, MUA only; Group MS, MUA plus ISI.

ISI = intra-articular steroid injection, MUA = manipulation under anesthesia, SPADI = the shoulder pain and disability index.