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Table 2 Lymph node harvest

From: Results of a randomized controlled trial of level IIb preserving neck dissection in clinically node-negative squamous carcinoma of the oral cavity

Level IIb preserving Control P value
Mean (n) SD Mean (n) SD
Ia 3 1.4 3.1 2.1 0.88
Ib 5.5 2.9 4.7 2.6 0.459
IIa 7.6 8.4 7.1 7.5 0.84
IIb – – 6.1 4.9 –
III 4.3 3.3 5.7 3.8 0.29
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