Figure 1From: Time delays in diagnosis of pulmonary tuberculosis: a systematic review of literature Conceptual framework of the study and definitions of delays (Modified and adapted from Yimer et al) [12]. a = patient delay – the time from onset of symptoms to until the patients see the first health care practices. b = health care system delay – the time from first health care seeking for diagnosis until the diagnosis made. c = total delay (a + b).Back to article page