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Table 3 Methodologic quality of included studies

From: Does hydroxyapatite coating have no advantage over porous coating in primary total hip arthroplasty? A meta-analysis

Study Randomized adequately a Allocation concealed Similar baseline Patient blinded Care provider blinded Outcome assessor blinded Avoid selective reporting Similar or avoided cofactors Patients’ compliance b Acceptable drop-out rate c Similar timing ITT analysis d Quality e
Hamadouche et al. [34] Yes Unclear Yes Unclear Unclear Yes Yes Yes Yes Yes Yes No High
Incavo et al. [32] Yes Unclear Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No High
Kim et al. [23] Yes Yes Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No High
Kim et al. [24] Yes Unclear Yes Yes Unclear Yes Yes Yes Yes Yes Yes No High
Lee and Lee [33] Yes Unclear Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No High
Søballe et al. [4] Yes Yes Yes Unclear Unclear Yes Yes Yes Yes Yes Yes No High
Tanzer et al. [22] Yes Yes Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No High
Tanzer et al. [31] Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No High
Yee et al. [30] Yes Unclear Yes Unclear Unclear Yes Yes Yes Yes Yes Yes No High
Yoon et al. [29] Yes Yes Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No High
Camazzola et al. [28] Yes Unclear Yes Unclear Unclear Yes Yes Yes Yes No Yes No Moderate
Dorr et al. [16] Unclear Unclear Yes Unclear Unclear Unclear Yes Yes Yes Unclear Yes Unclear Moderate
Lombardi, Jr. et al. [12] Unclear Unclear Yes Unclear Unclear Unclear Yes Yes Yes No Yes No Moderate
Mcpherson et al. [36] Unclear Unclear Yes Yes Unclear Unclear Yes Yes Yes Yes Yes No Moderate
Parvizi et al. [9] Unclear Unclear Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No Moderate
Paulsen et al. [38] Unclear Unclear Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No Moderate
Ranawat et al. [35] Yes Unclear Yes Unclear Unclear Unclear Yes Yes Yes No Yes No Moderate
Rothman et al. [10] No Unclear Yes No No Yes Yes Yes Yes Yes Yes No Moderate
Sanchez-Sotelo et al. [37] Unclear Unclear Yes Unclear Unclear Unclear Yes Yesc Yes Yes Yes No Moderate
Sano et al. [39] Unclear Unclear Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No Moderate
Santori et al. [14] Unclear Unclear Yes Unclear Unclear Unclear Yes Yes Yes Yes Yes No Moderate
  1. aOnly if the method of sequence generated was explicitly described could get a “Yes”; sequence generated by “Dates of Admission” or “Patients Number” received a “No”.
  2. bIntermittent treatment or therapy duration less than 6 months means “Yes”, otherwise “No”.
  3. cDrop-out rate ≥ 20% means “No”, otherwise “Yes”.
  4. d ITT intention-to-treat, only if all randomized patients are analyzed in the group they were allocated to could receive a “Yes”.
  5. eThe frequency of “Yes” as 7 or greater means “High”, greater than 4 but less means “Moderate”, 4 or less means “Low”.