Table 5 Logistic regression analysis between some independent variables and dependent variables at follow-up

Predictors of persistent painful arc at follow-up

Saline injection

0.008*

30.110

< 0.001*

0.578

Baseline Neer’s sign

0.011*

10.8

Baseline passive extension ROM

0.015*

0.852

Predictors of Neer’s sign at follow-up

Baseline Neer’s sign

 < 0.001*

0.93

< 0.001*

0.295

Predictors of empty can test at follow-up

Baseline US-T

0.025*

1785.07

0.007*

0.150

Predictors of Hawkins–Kennedy sign at follow-up

Baseline Hawkins–Kennedy sign

0.039*

0.122

0.007*

0.237

Age

0.016*

1.091