Pampas | Villa | p-value | |
---|---|---|---|
Sample size | 419 | 465 | |
Asthma status, n (%) | 258 (40.8) | 248 (45.5) | 0.11 |
Vitamin D Measures | |||
Total 25(OH)D (ng/ml), mean (SD) | 20.9 (13.1) | 30.0 (9.4) | <0.001 |
Demographics | |||
Age in years, mean (SD) | 14.5 (2.69) | 13.4 (2.62) | <0.001 |
n, (%) boys | 341 (54.0) | 280 (51.4) | 0.21 |
Anthropometry | |||
Height in cm, mean (SD) | 151 (12.2) | 151 (11.8) | 0.74 |
BMI in kg/m2, mean (SD) | 21.8 (3.75) | 22.1 (4.48) | 0.34 |
BMI-for-age z-score, mean (SD) | 0.840 (1.1) | 1.00 (1.22) | 0.04 |
Socioeconomics, n (%) | |||
Maternal education ≥ 6 years | 210 (52.9) | 333 (76.7) | <0.001 |
6 or more household members | 191 (47.8) | 241 (55.0) | 0.04 |
SES Score | −0.684 (1.57) | 0.793 (1.45) | <0.001 |
Smoking | |||
Current smoker | 11 (3.06) | 5 (1.23) | 0.08 |
Pulmonary function, allergy, FeNO | |||
Pre-BD FEV1 z-score, mean (SD) | 1.36 (1.27) | 1.31 (1.31) | 0.57 |
Pre-BD FVC z-score, mean (SD) | 1.44 (1.26) | 1.28 (1.34) | 0.07 |
Pre-BD FEV1/FVC z-score, mean (SD) | −0.0296 (1.09) | 0.129 (1.06) | 0.03 |
Either parent with history of physician-diagnosed asthma, n (%) | 69 (17.9) | 77 (18.0) | 0.95 |
Atopy, n (%) | 293 (71.3) | 310 (68.3) | 0.34 |
Pollen allergy (self-report), n (%) | 27 (6.94) | 22 (5.02) | 0.24 |
Animal dander allergy (self-report), n (%) | 71 (17.9) | 66 (15.1) | 0.27 |
Ever having allergic rhinitis (self-report), n (%) | 229 (57.5) | 233 (53.2) | 0.21 |
Either parent with history of allergic rhinitis (self-report), n (%) | 98 (25.3) | 114 (26.6) | 0.68 |
Ever having eczema (self-report), n (%) | 56 (14.1) | 25 (5.71) | <0.001 |
Either parent with history of eczema (self-report), n (%) | 18 (4.63) | 7 (1.64) | 0.01 |
Exhaled nitric oxide in ppb, mean(SD) | 29.6 (30.8) | 23.2 (24.6) | 0.001 |
Calendar quarter at time of blood draw, n, (%) | |||
January–March | 0 | 191 (41.1) | <0.001 |
April–June | 0 | 22 (4.73) | |
July–September | 77 (18.4) | 0 | |
October–December | 342 (81.6) | 252 (54.2) | |
Mean daily frequency of vitamin D-rich food intake in 14 days prior to blood draw, mean (SD); n = 646 | |||
Vitamin-D rich oily fish | 0.12 (0.16) | 0.14 (0.16) | 0.04 |
Vitamin-D fortified milk | 0.51 (0.46) | 0.59 (0.66) | 0.04 |