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. 2019 Oct 15;20:448. doi: 10.1186/s12891-019-2853-0

Table 5.

Conversion to THA

Conversion to THA No THA p-value
Mechanical Symptoms 1/4 3/4 0.55
Ficat-Alret Stage: 0.03*
 Stage I 0/3 3/3 0.18
 Stage IIa 1/4 3/4 0.55
 Stage IIb 4/4 0/4 0.015*
Risk Factors
 Inhaled Corticosteroid 2/2 0/2 0.18
 Smoking Tobacco 2/4 2/4 1.00
Bilateral Hip Involvement 2/6 4/6 0.57

Mechanical symptoms include locking, catching, and buckling. Statistical testing was conducted using Fisher’s Exact Test for correlation of categorical variables. A p-value less than 0.05 indicated a significant difference