Table 1.

Summary of demographics and lung function at the time of lung function testing for 909 First Nations subjects, including 48 subjects with ever-pneumonia status during critical development windows.

		All Subjects (n = 909)	Never-Pneumonia (n = 861)	Ever-Pneumonia (n = 48)	Pneumonia Occurred When <3 Years of Age (n = 26)	Pneumonia Occurred When 3–5 Years of Age (n = 13)	First pneumonia When >5 Years of Age (n = 9)
		Median (IQR) or n (%)
Age when lung function undertaken		11.0 (8.2, 13.8)	11.0 (8.2, 13.8)	10.1 (8.1, 14.1)	9.1 (8.0, 14.1)	9.1 (7.4, 11.9)	13.4 (11.6, 16.7)
Female		464 (51%)	442 (51%)	22 (46%)	9 (35%)	7 (54%)	6 (67%)
Household smoking		130 (14%)	126 (15%)	4 (8%)	2 (8%)	1 (8%)	1 (11%)
Gestation age (weeks)	>36	464 (51%)	438 (51%)	26 (54%)	15 (58%)	7 (54%)	4 (44%)
	34–36	45 (5%)	42 (5%)	3 (8%)	1 (4%)	1 (8%)	1 (11%)
	30–33	10 (1%)	10 (1%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)
	<30	6 (1%)	6 (1%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)
	Unknown	385 (42%)	365 (42%)	20 (42%)	10 (38%)	5 (38%)	4 (44%)
Eczema		48 (5%)	45 (5%)	3 (6%)	2 (8%)	0 (0%)	1 (11%)
Hayfever		59 (6%)	53 (6%)	6 (12%)	4 (15%)	0 (0%)	0 (0%)
Rash		44 (5%)	43 (5%)	1 (2%)	0 (0%)	0 (0%)	1 (11%)
Wheeze		115 (13%)	104 (12%)	11 (23%)	6 (23%)	1 (8%)	2 (22%)
FEV1	Litres (L)	2.02 (1.51, 2.77)	2.03 (1.52, 2.77)	1.97 (1.38, 2.75)	1.77 (1.32, 2.76)	1.74 (1.35, 2.12)	2.73 (2.13, 2.99)
	Z–score	−0.13 (−0.71, 0.54)	−0.11 (−0.70, 0.58)	−0.42 (−1.01, 0.12)	−0.51 (−1.07, −0.04)	−0.44 (−1.17, −0.24)	0.01 (−0.43, 0.42)
	% Predicted	98.5 (91.5, 106.4)	98.7 (91.6, 106.8)	94.9 (87.0, 100.2)	94.0 (86.0, 99.6)	94.7 (85.8, 97.2)	100.1 (95.1, 104.9)
FVC	Litres (L)	2.33 (1.74, 3.18)	2.34 (1.75, 3.18)	2.26 (1.60, 3.22)	1.99 (1.54, 3.39)	1.99 (1.55, 2.38)	3.03 (2.61, 3.44)
	Z–score	0.04 (−0.58, 0.72)	0.06 (−0.58, 0.73)	−0.30 (−1.00, 0.21)	−0.28 (−1.14, 0.14)	−0.47 (−1.03, −0.31)	0.05 (−0.34, 0.81)
	% Predicted	100.4 (93.3, 108.3)	100.6 (93.3, 108.6)	96.6 (88.2, 102.5)	97.0 (87.6, 101.6)	94.7 (88.8, 96.5)	100.5 (96.0, 109.2)