Scenario/Research Question:What is the impact of seat belt use on length of stay in the pediatric ICU following traumatic brain injury?

Variables:seat belt use - independent

length of stay ion pediatric ICU - dependent

Population:children with traumatic brain injury

Null Hypothesis:the use of seat belts has no impact on the length of stay in the pediatric ICU.

SPSS Output

Frequencies

Statistics

Seat_Belt_Use

ICU_Time

N

Valid

60

60

Missing

0

0

Mean

1.50

2.268

Std. Error of Mean

.065

.2165

Median

1.50

1.950

Mode

1a

1.0a

Std. Deviation

.504

1.6774

Skewness

.000

.940

Std. Error of Skewness

.309

.309

Kurtosis

-2.070

.337

Std. Error of Kurtosis

.608

.608

Minimum

1

.1

Maximum

2

6.6

Percentiles

25

1.00

1.000

50

1.50

1.950

75

2.00

3.075

a. Multiple modes exist. The smallest value is shown

t-test

Group Statistics

Seat_Belt_Use

N

Mean

Std. Deviation

Std. Error Mean

ICU_Time

dimension1

no

30

2.817

1.8075

.3300

yes

30

1.719

1.3541

.2472

Independent Samples Test

Levene's Test for Equality of Variances

t-test for Equality of Means

F

Sig.

t

df

Sig. (2-tailed)

Mean Difference

Std. Error Difference

95% Confidence Interval of the Difference

Lower

Upper

ICU_Time

Equal variances assumed

5.171

.027

2.663

58

.010

1.0980

.4123

.2726

1.9234

Equal variances not assumed

2.663

53.755

.010

1.0980.4123.27121.9248

Answer the following questions in space provided;

1. interpretation
2. accuracy of analysis selection and rationale