Baseline cohort characteristics in an evaluation of the uptake, outcomes, and costs of antenatal, well-baby, and PMTCT services under routine care conditions in Zambia.

ART: antiretroviral therapy; CI: confidence interval; IQR: interquartile range; PMTCT: prevention of mother-to-child transmission.aDifferences in means were calculated using an independent two-sided t-test. Differences in medians were calculated using the Wilcoxon rank sum test.

ART：抗逆转录病毒疗法（antiretroviral therapy, ART）；CI：置信区间（confidence interval, CI）；IQR：四分位距（interquartile range, IQR）；PMTCT：预防母婴传播（prevention of mother-to-child transmission, PMTCT）。组间均值差异采用独立双侧t检验计算；组间中位数差异采用Wilcoxon秩和检验计算。