Using SPSS (if applicable), answer the following question and detail the exact steps you took in SPSS to get your answer.

The following data is based on a study of a vulnerable patient population (Cerebral Palsy). The population has a compromised bone structure that may increase the risk of fracture. The strength of the bones is measured using a Z score corresponding to the bones mineral density which is based on the patients reference cohort (gender and age). A Z score of -5.9 for example indicates that the patients bone mineral density (BMD) is 5.9 standard deviations below the reference of a non-vulnerable cohort. We would expect that patient to be at significant risk of fracture because their bones are so weak. What is the relative risk of fracture for those with a Z score of -1.8 or worse compared to those above that threshold?

PT ID	AGE	GENDER	RACE	BMI	ZSCORE	NUMFRACT
1	12	M	W	19.4	1.6	0
2	12	M	W	17.6	-1.8	1
3	13	M	W	15.4	999	999
4	11	M	AA	46.2	-0.3	1
5	18	F	W	16.5	-2.4	1
6	8	F	W	20.6	-2.9	1
7	16	F	A	16.1	-4.8	2
8	17	F	W	22.7	-2.7	4
9	17	M	W	30	0	0
10	13	M	W	18.3	-2.2	2
11	16	M	W	23.2	-1.4	0
12	14	F	O	14.8	-5.3	3
13	14	M	999	999	999	1
14	17	M	W	13	-1.9	0
15	18	F	W	13	-5.9	1