Fig. 1From: A survey of retail prices of antimicrobial products used in small-scale chicken farms in the Mekong Delta of Vietnama Probability of flocks using antimicrobials by age (weeks); b Weekly expense (per flock) on antimicrobials during the flock production cycle by age; c Total expense (per bird) on antimicrobials; d Total expense per kilogram of bird. Costs are expressed in cents of 1 US$ (₵). The blue lines represent the crude (unadjusted) mean across all observation weeks. Vertical bars represent the standard error of the mean (SE)Back to article page