By Martin Baccardax “We are more interested in current and forward-looking demand trends and future margin risk,” than first quarter earnings, said Barclays analyst Adrienne Yih. Nike (NKE) – Get Nike Inc. Report shares slumped lower Tuesday after analysts at Barclays lowered their rating and price target on the world’s biggest sports apparel group ahead of its first quarter earnings later this month. Barclays analyst Adrienne Yih cut her rating on Nike by one notch, to ‘equal weight’ and lowed his price target by $15, to $110 per share, citing excess inventory and weakness in its key China ma…