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. Author manuscript; available in PMC: 2025 May 1.
Published in final edited form as: J Cyst Fibros. 2023 Sep 4;23(3):524–531. doi: 10.1016/j.jcf.2023.08.006

Table 1b.

Characteristics of the adult population: overall, by underweight status, and analytic sub-samples

Overall
(N=14,8
98)
Underweight
(BMI ≤18.5 kg/m2)
p-
value
*
Overweight/obese
(BMI>25 kg/m2)
p-
value
*
Analytic sub-samples1
Yes
(n=1,029
)
6.9%
No
(n=13,86
9)
93.1%
Yes
(n=4,39
7)
29.5%
No
(n=10,501
)
70.5%
Program-
level
(n=6,651)
Area-
level
(n=14,613
)
Socio-demographic
Age, years; mean (SD) 32.7 (12.4) 28.7 (10.8) 33.0 (12.4) <0.001 36.9 (13.27) 30.72(11.52) <0.001 31.2 (12.3) 32.7 (12.4)
Female, % 48.0 52.4 47.8 0.611 41.4 50.8 <0.001 49.4 48.1
Race/ethnicity, %
NH White 88.8 86.9 88.9 0.003 89.3 88.5 0.117 88.8 88.8
NH Black 3.0 4.6 2.9 2.7 3.2 3.2 3.0
Other 2.3 3.5 2.2 2.0 2.5 2.2 2.3
Hispanic 5.8 4.9 5.9 6.0 5.8 5.8 5.8
Insurance, %
Any private 66.8 49.6 68.1 <0.001 70.3 65.3 <0.001 66.6 66.9
Public only/None 33.2 50.4 31.9 29.7 34.7 33.4 33.1
Clinical
Genotype, %
F508del heteroz 44.6 49.8 44.3 0.009 35.4 48.5 <0.001 46.0 44.6
F508del homoz 41.2 38.0 41.4 46.5 38.9 40.6 41.2
Other 14.2 12.2 14.3 18.1 12.6 13.4 14.2
CFTR modulator use, % 65.9 63.9 66.0 0.133 62.3 67.3 <0.001 67.8 65.9
CFRD, % 31.9 37.5 31.5 <0.001 29.5 32.7 <0.001 31.3 31.9
PERT, % 84.6 92.1 84.0 <0.001 73.6 89.2 <0.001 86.2 84.7
Dietitian consultatio n, % 91.2 94.9 90.9 <0.001 89.3 91.9 <0.001 90.8 91.2
Supplemental feeding, % 48.0 81.2 45.5 <0.001 24.7 57.7 <0.001 49.5 48.0
*

Difference between underweight and not-underweight in the overall sample

1

The program-level analytic sub-sample includes patients in the CF Foundation Patient Registry (CFFPR) who receive care in programs that responded to the survey. The area-level analytic sub-sample includes all patients in the CFFPR whose residential zip code was successfully matched to a zip-code food access score.

Age is shown as mean (SD).

BMI=Body Mass Index; CF=cystic fibrosis; CFRD=CF-related diabetes; CFTR= CF transmembrane regulator; NH=Non-Hispanic; PERT=Pancreatic enzyme replacement therapy