Skip to main content

Table 3 Quality of the studies reporting survival outcomes between Surgery and Radiotherapy (Newcastle-Ottawa Scale)

From: Treatment of early stage Supraglottic squamous cell carcinoma: meta-analysis comparing primary surgery versus primary radiotherapy

Study Selection Comparability Outcome Score*
  Representativeness of exposed cohort Selection of non exposed cohort Ascertainment of exposure Outcome not present at outset of study   Assessment F/U Length Adequacy of F/U  
Arshad 2014 [7] * * * * ** * * * 9
Jones 2004 [10] * * * * ** * * * 9
Orus 2000 [12] * * * *   * * * 7
Santos 1998 [13] * * * * * * *   7
Sessions 2005 [14] * * * *   * * * 7
Spector 1995 [15] * * * * ** * * * 9
Spriano 1997 [16] * * * * * * * * 8
  1. *Maximum total score that a study can get is 9
  2. A study can receive a maximum of 1 asterisk for each numbered item within the selection and outcome categories. A maximum of 2 asterisks can be given for comparability