The most important differences were measurements of the population's features and compliance with bundle elements, which allowed us to analyze the real impact of our intervention by excluding confounders associated with patients' characteristics and infection control practices.
While excluding military intervention for such a buffer zone, it was not clear who would protect civilians in such an area.
Regression analyses were used to predict outcome differences by including or excluding the intervention.
Excluding intervention costs, mean health-care costs in the intervention arm were £1,722, compared with £1,659 for the control arm.
The secondary analysis will be a per protocol analysis, excluding intervention group participants who did not attend at least three of the four intervention sessions.
Additional strengths are that we specifically focused our review on exclusively educational interventions (i.e., excluding those interventions with additional components such as case management, financial incentives or health provider education) and included sensitivity analysis excluding those studies with higher risk of bias.
Specifically, the PSNBR excluding financial interventions widened to £9.95bn in April, from a shortfall of £7.25bn in April 2010.
But excluding this one-off impact, the government actually recorded public sector net borrowing, excluding financial interventions such as bank bailouts, of £11.5bn - £3bn higher than City forecasts.
The deficit (or the gap between what the government has coming in and what it spends) for 2009/10 is: £106.369bn excluding financial interventions or £100.367bn including financial interventions.
Indeed, some better news for the chancellor saw last year's public sector net borrowing requirement (PSNBR) excluding financial interventions trimmed to £139.4bn from the previously reported £141.1bn.
But even excluding these interventions - or in other words assuming they get their money back - net debt still exceeded 40% of GDP at the end of last year.
