Table 2

Univariate analysis of variables associated with residual pleural thickening

Variable	Characteristics
Variable	Unfavourable	Favourable	Crude OR	95% CI	p-value
Fine classes	IV, V	I, II, III	12.86	5.78–28.61	<0.01
Temperature °C	≥38	<38	8	4.12–15.53	<0.01
Leukocytes per mm³	≥10⁴	<10⁴	14.31	6.97–29.35	<0.01
Volume %	≥50	<50	1.79	0.89–3.58	<0.01
LDH IU·L⁻¹	≥1000	<1000	0.76	0.26–2.26	0.01
pH	≤7.20	>7.20	0.94	0.49–1.80	0.02
Pus	Yes	No	8.64	3.03–24.66	<0.01
Pleural leukocytes per mm³	≥6×10³	<6×10³	2.75	1.30–5.82	<0.01
Pathogen	Yes	No	0.20	0.10–0.40	<0.01
Fibrinolisis	Yes	No	2.17	1.04–4.51	0.05
Thoracoscopy	Yes	No	6.73	1.62–27.88	0.01
Thoracotomy	Yes	No
In-hospital stay days	>7	≤7	1.36	0.60–3.04	0.01
Resolution of pleural effusions days	>15	≤15	26.25	11.57–59.57	<0.01
Time from symptoms to treatment days	>3	≤3	4.28	1.49–12.27	0.28