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Table 4 Observational studies with a control group quality assessment checklist

From: Treatment of cervical cancer in HIV-seropositive women from developing countries: a protocol for a systematic review

Assessment criteria Studies fulfilling criteria Studies not fulling criteria Studies not applicable
Assessment of participants’ on admission to study    
Assessment of treatment method under review    
Participants were stratified for the cervical cancer treatment method under review    
Ascertainment of cervical cancer and HIV status, prospectively from participants through diagnosis, laboratory tests and blood tests    
Ascertainment of cervical cancer and HIV status, retrospectively from participants through diagnosis, laboratory tests and blood tests    
Complete follow-up—all subjects accounted for    
Subjects lost to follow-up unlikely to introduce bias (≥ 75% follow-up or description provided of those lost    
If groups were not stratified for treatment methods and the distribution was unbalanced, were outcomes adjusted for