A case-control study was conducted to assess the association between obesity and hemorrhoids:

Crude	Hemorrhoids	No hemorrhoids
Obese	201	290
Not obese	99	290
Total	300	580

When stratified by age, the following data were observed:

<50 years old	Hemorrhoids	No hemorrhoids
Obese	147	126
Not obese	63	84
Total	210	210

50 or older	Hemorrhoids	No hemorrhoids
Obese	130	105
Not obese	60	125
Total	190	230

What is the crude odds ratio for the association between obesity and hemorrhoids?