Example 6 –
Repeated Measures Sample

n Fatty food is hypothesized to correlate with obesity. Your obese patients (all 75 lbs. overweight) are weighed before beginning your study (pre-weight) and again after 1 year of not eating any fatty food on a list you provide for them (all other lifestyle behaviors remain the same). Your patients again are weighed at the end of the year. Their pre- and post-weights are presented. Determine if the pre weight significantly correlated to the post weight – i.e. does consumption of fatty foods predict obesity.

194

292

N

195

371

M

238

428

L

195

364

K

179

281

J

205

373

I

170

299

H

215

333

G

194

315

F

188

286

E

240

388

D

196

285

C

187

280

B

199

381

A

Y (post wgt)

X (pre wgt)

Patient