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Table 2 Effective Public Health Practice Project (EPHPP) quality assessment of quantitative studies

From: Aboriginal and Torres Strait Islander maternal and child health and wellbeing: a systematic search of programs and services in Australian primary health care settings

Publication Selection bias Study design Confounders Blinding Data collection methods Withdrawals and dropouts Intervention integrity* Analyses** Total score
Jan, S., et. al. (2004) [21] Moderate Moderate Weak Moderate Weak Not applicable (Q1) Can’t tell (Q1) Individual Moderate
(Q2) Can’t tell (Q2) Organisation
(Q3) Can’t tell
(Q3) Yes
(Q4) No
Carter, E. et al. (2004) [20] Moderate Moderate Weak Weak Weak Not applicable (Q1) Can’t tell (Q1) Individual Weak
(Q2) Can’t tell (Q2) Organisation
(Q3) Can’t tell
(Q3) Yes
(Q4) No
NSW Health (2005) [18] Moderate Moderate Weak Weak Weak Weak (Q1) 80-100% (Q1) Individual Weak
(Q2) Can’t tell (Q2) Individual
(Q3) Can’t tell
(Q3) Yes
(Q4) No
Power, C. et al. (2008) [28] Weak Weak Weak Weak Weak Weak (Q1) 80-100% (Q1) Individual Weak
(Q2) Can’t tell (Q2) Individual
(Q3) Can’t tell (Q3) Yes
(Q4) No
Panaretto, K. S. et al. (2007) [23] Moderate Moderate Weak Moderate Weak Weak (Q1) 80-100% (Q1) Individual Weak
(Q2) No (Q2) Individual
(Q3) Can’t tell
(Q3) Yes
(Q4) No  
Panaretto, K. et al. (2005) [24] Moderate Moderate Weak Moderate Weak Weak (Q1) 80-100% (Q1) Individual Weak
(Q2) No (Q2) Individual
(Q3) Yes
(Q3) Can’t tell  
(Q4) No
Smith, R. M. et al. (2000) [16] Moderate Moderate Weak Moderate Weak Weak (Q1) 80-100% (Q2) Can’t tell (Q1) Community Weak
(Q3) Can’t tell
(Q2) Individual
(Q3) Yes
(Q4) No
Mackerras, D. (2001) [17] Moderate Moderate Weak Moderate Weak Weak (Q1) Can’t tell (Q1) Community Weak
(Q2) No
(Q3) Can’t tell (Q2) Individual
(Q3) Yes
(Q4) No
Tursan d’Espaignet, E. et al. (2003) [25] Moderate Moderate Weak Moderate Weak Weak (Q1) Can’t tell (Q1) Community Weak
(Q2) Can’t tell
(Q3) Can’t tell (Q2) Individual  
(Q3) Yes
(Q4) No
Wong, R. et al. (2011) [31] Moderate Moderate Weak Moderate Weak Weak (Q1) Can’t tell (Q1) Individual Weak
(Q2) Can’t tell (Q2) Individual
(Q3) Can’t tell
(Q3) Can’t tell
(Q4) No
  1. *Intervention Integrity.
  2. Q1) What percentage of participants received the allocated intervention or exposure of interest.
  3. Q2) Was the consistency of the intervention measured?
  4. Q3) Is it likely that participants received an unintended intervention (contamination or co-intervention) that may influence the result?
  5. **Analyses.
  6. Q1) Unit of allocation.
  7. Q2) Unit of analyses.
  8. Q3) Are the statistical methods appropriate for the study design?
  9. Q4) Is the analyses performed by intervention allocation status (i.e. intention to treat) rather than the actual intervention received?