Investigation of the Prevalence and Diagnosis of Chronic Obstructive Pulmonary Disease in a Group of Elderly Individuals Residing in an Island Area of Ningbo

Table 3

The relationship between factors in different sex GOLD classification.

	Men					Women
	Total n = 682	NO COPD n = 485	GOLD stage I n = 82	GOLD stage II n = 83	GOLD stage III-IV n = 32	Total n = 689	No COPD n = 632	GOLD stage I n = 22	GOLD stage II n = 23	GOLD stage III-IV n = 12
Age (years)	69.7 ± 6.7	68.9 ± 6.3	70.5 ± 6.9	72.1 ± 6.8	73.5 ± 7.2	68.5 ± 6.0	68.1 ± 5.8	74.9 ± 6.7	71.0 ± 5.6	71.8 ± 6.4
60–69	366 (53.7%)	288 (59.4%)	40 (48.8%)	31 (37.3%)	8 (25.0%)	419 (60.8%)	399 (63.1%)	4 (18.2%)	12 (52.2%)	4 (33.3%)
70–79	246 (36.1%)	159 (32.8%)	30 (36.6%)	39 (47.0%)	17 (53.1%)	230 (33.4%)	203 (32.1%)	11 (50.0%)	9 (39.1%)	7 (58.3%)
≥80	70 (10.3%)	38 (7.8%)	12 (14.6%)	13 (15.7%)	7 (21.9%)	40 (5.8%)	30 (4.7%)	7 (31.8%)	2 (8.7%)	1 (8.3%)
Smoking
Yes	551 (80.8%)	370 (76.3%)	70 (85.4%)	79 (95.2%)	32 (100.0%)	21 (3.0%)	14 (2.2%)	1 (4.5%)	4 (17.4%)	2 (16.7%)
No	131 (19.2%)	115 (23.7%)	12 (14.6%)	4 (4.8%)	0 (0.0%)	668 (97.0%)	618 (97.8%)	21 (95.5%)	19 (82.6%)	10 (83.3%)
Smoking (pack-years)
0	131 (19.2%)	115 (23.7%)	12 (14.6%)	4 (4.8%)	0 (0.0%)	668 (97.0%)	618 (97.8%)	21 (95.4%)	19 (82.6%)	10 (83.3%)
1–14.9	59 (8.7%)	48 (9.9%)	5 (6.1%)	6 (7.2%)	0 (0.0%)	7 (1.0%)	6 (0.9%)	0 (0.0%)	0 (0.0%)	1 (8.3%)
15.0–29.9	100 (14.7%)	70 (14.4%)	7 (8.5%)	17 (20.5%)	6 (18.8%)	6 (0.8%)	5 (0.8%)	0 (0.0%)	1 (4.3%)	0 (0.0%)
≥30	392 (57.5%)	252 (52.0%)	58 (70.7%)	56 (67.5%)	26 (81.2%)	8 (1.2%)	3 (0.5%)	1 (4.5%)	3 (13.0%)	1 (8.3%)
BMI
<18.5	28 (4.1%)	19 (3.9%)	1 (1.2%)	4 (4.8%)	4 (12.5%)	28 (4.1%)	23 (3.6%)	3 (13.6%)	2 (8.7%)	0 (0.0%)
18.5–23.9	372 (54.5%)	262 (54.0%)	49 (59.8%)	40 (48.2%)	21 (65.6%)	320 (46.4%)	297 (47.0%)	6 (27.3%)	11 (47.8%)	6 (50.0%)
24.0–27.9	231 (33.9%)	167 (34.4%)	28 (34.1%)	33 (39.8%)	3 (9.4%)	249 (36.1%)	232 (36.7%)	8 (36.4%)	7 (30.4%)	2 (16.7%)
≥28.0	51 (7.5%)	37 (7.6%)	4 (4.9%)	6 (7.2%)	4 (12.5%)	92 (13.4%)	80 (12.7%)	5 (22.7%)	3 (13.0%)	4 (33.3%)
Family history of respiratory diseases
Yes	64 (9.4%)	38 (7.8%)	6 (7.3%)	13 (15.7%)	7 (21.9%)	71 (10.3%)	65 (10.3%)	2 (9.1%)	2 (8.7%)	2 (16.7%)
No	618 (90.6%)	447 (92.2%)	76 (92.7%)	70 (84.3%)	25 (78.1%)	618 (89.7%)	567 (89.7%)	20 (90.9%)	21 (91.3%)	10 (83.3%)
Exposure to biomass smoke from cooking
Yes	373 (54.7%)	269 (55.5%)	43 (52.4%)	42 (50.6%)	19 (59.4%)	624 (90.6%)	573 (90.7%)	19 (86.4%)	21 (91.3%)	11 (91.7%)
No	309 (45.3%)	216 (44.5%)	39 (47.6%)	41 (49.4%)	13 (40.6%)	65 (9.4%)	59 (9.3%)	3 (13.6%)	2 (8.7%)	1 (8.3%)
Cough
Yes	284 (41.6%)	154 (31.8%)	49 (59.8%)	54 (65.0%)	27 (84.4%)	174 (25.3%)	142 (22.5%)	9 (40.9%)	15 (65.2%)	8 (66.7%)
No	398 (58.4%)	331 (68.2%)	33 (40.2%)	29 (35.0%)	5 (15.6%)	515 (74.7%)	490 (77.5%)	13 (59.1%)	8 (34.8%)	4 (33.3%)
Dyspnea
Level 1	523 (76.7%)	423 (87.2%)	59 (72.0%)	34 (41.0%)	7 (21.9%)	501 (72.7%)	473 (74.8%)	17 (77.3%)	9 (39.1%)	2 (16.7%)
Level 2	126 (18.5%)	52 (10.7%)	18 (22.0%)	40 (48.2%)	16 (50.0%)	154 (22.4%)	138 (21.8%)	2 (9.1%)	9 (39.1%)	5 (41.7%)
Level 3–5	33 (4.8%)	10 (2.1%)	5 (6.1%)	9 (10.8%)	9 (28.1%)	34 (4.9%)	21 (3.3%)	3 (13.6%)	5 (21.8%)	5 (41.7%)
mMRC	—	—	1.3 ± 0.9	1.8 ± 1.0	2.4 ± 1.3	—	—	1.3 ± 1.1	1.4 ± 1.1	2.5 ± 1.6
CAT	—	—	6.1 ± 5.9	7.5 ± 6.1	13.4 ± 8.2	—	—	6.2 ± 5.5	6.8 ± 5.3	10.7 ± 8.5
FEV1 (L)	2.3 ± 0.6	2.5 ± 0.5	2.2 ± 0.4	1.6 ± 0.3	0.9 ± 0.3	1.8 ± 0.4	1.9 ± 0.4	1.5 ± 0.4	1.1 ± 0.2	0.7 ± 0.1
FVC (L)	3.1 ± 0.7	3.1 ± 0.6	3.4 ± 0.6	2.6 ± 0.5	2.0 ± 0.6	2.2 ± 0.5	2.3 ± 0.5	2.3 ± 0.5	1.8 ± 0.3	1.2 ± 0.2