Table 5

Summary of results of the final hierarchical multiple regression model: the dependent variable is the injurious fall rate per 1000 patient-days

R2

Adjusted R2

F change

Significance


Initial model summary (covariates only)

0.07

0.06

6.97

p < 0.001**


Final model summary (covariates and predictor)

0.08

0.07

6.78

0.009**


Final model


ANOVA

Sum of squares (df)

Mean square

F value

Significance


Regression

104.50 (13)

8.04

6.99

p < 0.001**

Residual

1206.50 (1049)

1.15

Total

1310.99 (1062)


Covariates and predictor

Standardized coefficient (β)

t

Significance


(Constant)

--

5.17

p < 0.001**


Hospital 1 (the reference group)

--

--

--


Hospital 2 (1 = Yes, 0 = No)

-0.11

-2.01

0.045*


Hospital 3 (1 = Yes, 0 = No)

-0.10

-2.37

0.02*


Hospital 4 (1 = Yes, 0 = No)

0.08

1.79

0.07


Medical unit (the reference group)

--

--

--


Surgical unit (1 = Yes, 0 = No)

-0.11

-2.91

0.004**


Medical-surgical combined unit (1 = Yes, 0 = No)

-0.09

-2.69

0.007**


Total productive nursing hours/patient-day

0.14

3.12

0.002**


Percentage of productive nursing hours provided by RNs

-0.20

-4.09

p < 0.001**


Percentage of patients aged ≥ 65 years

-0.13

-3.19

0.001**


Average CMI value

0.07

1.85

0.07


Percentage of patients with altered mental status at admission

0.05

1.48

0.14


Percentage of patients with hearing difficulties at admission

0.01

0.39

0.70


Call light use rate per patient-day (in 10 equal groups; 10 = least frequent, 100 = most frequent)

-0.07

-2.08

0.04*


Call light response time (in 10 equal groups; 10 = fastest, 100 = slowest)

0.08

2.60

0.009**


*p < 0.05; **p < 0.01

Tzeng et al. BMC Health Services Research 2012 12:84   doi:10.1186/1472-6963-12-84

Open Data