PubMed Central, : RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2026; 17(2): e0013. ISSN: 2076-9172Published online 2026 April 26. doi: 10.5041/RMMJ.10573

Table 2.

Spirometry Data, Number of Exacerbations, Number of Hospital Admissions, and Hb Values (n=147).

Parameter	Low CaO₂ (n=46)	Normal CaO₂ (n=92)	High CaO₂ (n=9)	P Value
Hb (g/dL)	11.1±1.98	13.1±1.20	17.4±2.90	0.01
FEV1 (mL)	1136.4±420.46	1200.2±471.98	1504.6±610.91	0.01
FEV1 (%)	47.8±16.77	50.9±17.94	51.6±18.44	0.327
FVC (mL)	2266.8±678.37	2322.9±738.00	3202.0±886.91	0.002
FVC (%)	79.1±20.91	76.2±21.33	85.8±20.41	0.366
FEV1/FVC (%)	48.8±10.95	49.9±11.27	47.5±12.93	0.755
Flare-ups last 12 months	2.1±2.70	1.9±2.85	0.8±0.97	0.40
Hospitalized exacerbations	1.5±2.65	1.1±1.72	0.7±0.87	0.452

Values are expressed as means±SD or as numbers (%).

Low CaO₂, <16 mL/dL; Normal CaO₂, 16–20 mL/dL; High CaO₂, >20 mL/dL.

Hb, hemoglobin; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity.

RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2026; 17(2): e0013. ISSN: 2076-9172

Published online 2026 April 26. doi: 10.5041/RMMJ.10573