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Figure 4 | Respiratory Research

Figure 4

From: Markers of exacerbation severity in chronic obstructive pulmonary disease

Figure 4

Fixed Effect Meta-Analysis Results of Selected Clinical Variables. Graphs displayed are: A) Arterial Carbon Dioxide Tension, PaCO2(Exacerbation Severity Levels I to III); B) PaCO2 (Out- versus In-patient Setting); C) Percent Oxygen Saturation – Arterial & Pulse Measurements Combined (Levels I to III); and D) Percent Oxygen Saturation – Arterial & Pulse Measurements Combined (Out- versus In-patient Setting). For each clinical variable, the point estimates (point), 95% confidence intervals (box), and two standard deviations (bars) are presented for Levels I to III and out- & in-patient settings. 'N' signifies the total studies and 'n' is the total subjects. P < 0.017 is indicated for statistical comparisons of Level I versus II (*), II versus III (), and I versus III (#) as well as P < 0.05 for comparison of out- versus in-patient setting (*).

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