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Section

Pollution.Indoor pollution - Previous houses

Data summary

Baseline

Variable Stats / Values Freqs (% of Valid) Graph Missing
has_bfr_prev_house_details [factor]
  1. No
  1. Yes
122931 ( 23.9% )
392482 ( 76.1% )
0 (0.0%)
has_prev_house_details [factor]
  1. No
  1. Yes
7786 ( 1.5% )
507627 ( 98.5% )
0 (0.0%)
house_years_prev [integer]
Mean (sd) : 15.5 (11.2)
min ≤ med ≤ max:
1 ≤ 13 ≤ 75
IQR (CV) : 14 (0.7)
75 distinct values 7786 (1.5%)
house_years_before_prev [integer]
Mean (sd) : 14.9 (9.4)
min ≤ med ≤ max:
1 ≤ 15 ≤ 69
IQR (CV) : 16 (0.6)
69 distinct values 122932 (23.9%)
cooking_freq_prev [factor]
  1. Daily
  1. Weekly
  1. Monthly
  1. Never/Rarely
  1. No cooking facility
236964 ( 46.7% )
56139 ( 11.1% )
20012 ( 3.9% )
189696 ( 37.4% )
4816 ( 0.9% )
7786 (1.5%)
cooking_freq_before_prev [factor]
  1. Daily
  1. Weekly
  1. Monthly
  1. Never/Rarely
  1. No cooking facility
104219 ( 26.6% )
45141 ( 11.5% )
19585 ( 5.0% )
209159 ( 53.3% )
14378 ( 3.7% )
122931 (23.9%)
cooking_fuel_prev [factor]
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
80837 ( 25.8% )
103120 ( 32.9% )
125730 ( 40.2% )
2988 ( 1.0% )
440 ( 0.1% )
202298 (39.2%)
cooking_fuel_before_prev [factor]
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
24835 ( 14.7% )
57766 ( 34.2% )
84186 ( 49.8% )
1679 ( 1.0% )
479 ( 0.3% )
346468 (67.2%)
cooking_oil_prev [factor]
  1. Rapeseed
  1. Peanut
  1. Soybean
  1. Lard
  1. Other
123397 ( 39.4% )
65134 ( 20.8% )
42772 ( 13.7% )
49575 ( 15.8% )
32237 ( 10.3% )
202298 (39.2%)
cooking_oil_before_prev [factor]
  1. Rapeseed
  1. Peanut
  1. Soybean
  1. Lard
  1. Other
70076 ( 41.5% )
33029 ( 19.6% )
26302 ( 15.6% )
22571 ( 13.4% )
16967 ( 10.0% )
346468 (67.2%)
chimney_prev [factor]
  1. Yes
  1. Not all stoves
  1. No
135140 ( 26.9% )
195404 ( 38.9% )
172267 ( 34.3% )
12602 (2.4%)
chimney_before_prev [factor]
  1. Yes
  1. Not all stoves
  1. No
72515 ( 19.2% )
156267 ( 41.3% )
149322 ( 39.5% )
137309 (26.6%)
slow_b_prev [factor]
  1. Yes, always
  1. Yes, sometimes
  1. No
124644 ( 24.8% )
72176 ( 14.4% )
305991 ( 60.9% )
12602 (2.4%)
slow_b_before_prev [factor]
  1. Yes, always
  1. Yes, sometimes
  1. No
85805 ( 22.7% )
37751 ( 10.0% )
254548 ( 67.3% )
137309 (26.6%)
slow_b_fuel_prev [factor]
  1. Smokeless coal
  1. Smoky coal
  1. Coal brick / Coalite
  1. Other
107242 ( 54.5% )
28555 ( 14.5% )
60189 ( 30.6% )
834 ( 0.4% )
318593 (61.8%)
slow_b_fuel_before_prev [factor]
  1. Smokeless coal
  1. Smoky coal
  1. Coal brick / Coalite
  1. Other
65447 ( 53.0% )
26381 ( 21.4% )
30864 ( 25.0% )
864 ( 0.7% )
391857 (76.0%)
slow_b_loc_prev [factor]
  1. Inside the house
  1. Outside the house
165231 ( 84.0% )
31589 ( 16.0% )
318593 (61.8%)
slow_b_loc_before_prev [factor]
  1. Inside the house
  1. Outside the house
96411 ( 78.0% )
27145 ( 22.0% )
391857 (76.0%)
winter_heat_prev [factor]
  1. No
  1. Yes
233532 ( 46.0% )
274095 ( 54.0% )
7786 (1.5%)
winter_heat_before_prev [factor]
  1. No
  1. Yes
190230 ( 48.5% )
202252 ( 51.5% )
122931 (23.9%)
heating_fuel_prev [factor]
  1. Central heating
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
34201 ( 12.5% )
190 ( 0.1% )
127516 ( 46.5% )
101813 ( 37.1% )
8466 ( 3.1% )
1909 ( 0.7% )
241318 (46.8%)
heating_fuel_before_prev [factor]
  1. Central heating
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
18754 ( 9.3% )
80 ( 0.0% )
103710 ( 51.3% )
75880 ( 37.5% )
2466 ( 1.2% )
1362 ( 0.7% )
313161 (60.8%)

Generated by summarytools 1.0.1 (R version 4.3.1)
2024-02-27

Resurvey 1

Variable Stats / Values Freqs (% of Valid) Graph Missing
has_bfr_prev_house_details [factor]
  1. No
  1. Yes
3996 ( 20.2% )
15807 ( 79.8% )
0 (0.0%)
has_prev_house_details [factor]
  1. No
  1. Yes
177 ( 0.9% )
19626 ( 99.1% )
0 (0.0%)
house_years_prev [integer]
Mean (sd) : 15.7 (11.1)
min ≤ med ≤ max:
1 ≤ 13 ≤ 75
IQR (CV) : 14 (0.7)
73 distinct values 177 (0.9%)
house_years_before_prev [integer]
Mean (sd) : 15.2 (9.4)
min ≤ med ≤ max:
1 ≤ 15 ≤ 66
IQR (CV) : 15 (0.6)
61 distinct values 3996 (20.2%)
cooking_freq_prev [factor]
  1. Daily
  1. Weekly
  1. Monthly
  1. Never/Rarely
  1. No cooking facility
9686 ( 49.4% )
2029 ( 10.3% )
689 ( 3.5% )
7120 ( 36.3% )
102 ( 0.5% )
177 (0.9%)
cooking_freq_before_prev [factor]
  1. Daily
  1. Weekly
  1. Monthly
  1. Never/Rarely
  1. No cooking facility
4386 ( 27.7% )
1692 ( 10.7% )
750 ( 4.7% )
8486 ( 53.7% )
493 ( 3.1% )
3996 (20.2%)
cooking_fuel_prev [factor]
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
3241 ( 26.1% )
3665 ( 29.5% )
5387 ( 43.4% )
94 ( 0.8% )
17 ( 0.1% )
7399 (37.4%)
cooking_fuel_before_prev [factor]
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
1143 ( 16.7% )
2058 ( 30.1% )
3570 ( 52.3% )
37 ( 0.5% )
20 ( 0.3% )
12975 (65.5%)
cooking_oil_prev [factor]
  1. Rapeseed
  1. Peanut
  1. Soybean
  1. Lard
  1. Other
5102 ( 41.1% )
2398 ( 19.3% )
1844 ( 14.9% )
1557 ( 12.6% )
1503 ( 12.1% )
7399 (37.4%)
cooking_oil_before_prev [factor]
  1. Rapeseed
  1. Peanut
  1. Soybean
  1. Lard
  1. Other
2978 ( 43.6% )
1186 ( 17.4% )
1161 ( 17.0% )
679 ( 9.9% )
824 ( 12.1% )
12975 (65.5%)
chimney_prev [factor]
  1. Yes
  1. Not all stoves
  1. No
5338 ( 27.3% )
7302 ( 37.4% )
6884 ( 35.3% )
279 (1.4%)
chimney_before_prev [factor]
  1. Yes
  1. Not all stoves
  1. No
2845 ( 18.6% )
6288 ( 41.1% )
6181 ( 40.4% )
4489 (22.7%)
slow_b_prev [factor]
  1. Yes, always
  1. Yes, sometimes
  1. No
4312 ( 22.1% )
2946 ( 15.1% )
12266 ( 62.8% )
279 (1.4%)
slow_b_before_prev [factor]
  1. Yes, always
  1. Yes, sometimes
  1. No
3246 ( 21.2% )
1356 ( 8.9% )
10712 ( 69.9% )
4489 (22.7%)
slow_b_fuel_prev [factor]
  1. Smokeless coal
  1. Smoky coal
  1. Coal brick / Coalite
  1. Other
3668 ( 50.5% )
991 ( 13.7% )
2583 ( 35.6% )
16 ( 0.2% )
12545 (63.3%)
slow_b_fuel_before_prev [factor]
  1. Smokeless coal
  1. Smoky coal
  1. Coal brick / Coalite
  1. Other
2155 ( 46.8% )
895 ( 19.4% )
1524 ( 33.1% )
28 ( 0.6% )
15201 (76.8%)
slow_b_loc_prev [factor]
  1. Inside the house
  1. Outside the house
6409 ( 88.3% )
849 ( 11.7% )
12545 (63.3%)
slow_b_loc_before_prev [factor]
  1. Inside the house
  1. Outside the house
3783 ( 82.2% )
819 ( 17.8% )
15201 (76.8%)
winter_heat_prev [factor]
  1. No
  1. Yes
9115 ( 46.4% )
10511 ( 53.6% )
177 (0.9%)
winter_heat_before_prev [factor]
  1. No
  1. Yes
7341 ( 46.4% )
8466 ( 53.6% )
3996 (20.2%)
heating_fuel_prev [factor]
  1. Central heating
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
1310 ( 12.5% )
7 ( 0.1% )
4910 ( 46.7% )
4086 ( 38.9% )
194 ( 1.8% )
4 ( 0.0% )
9292 (46.9%)
heating_fuel_before_prev [factor]
  1. Central heating
  1. Gas
  1. Coal
  1. Wood
  1. Electricity
  1. Other
782 ( 9.2% )
3 ( 0.0% )
4276 ( 50.5% )
3354 ( 39.6% )
49 ( 0.6% )
2 ( 0.0% )
11337 (57.2%)

Generated by summarytools 1.0.1 (R version 4.3.1)
2024-02-27

Resurvey 2

Variable Stats / Values Freqs (% of Valid) Graph Missing
has_bfr_prev_house_details [factor]
  1. No
  1. Yes
11815 ( 47.2% )
13239 ( 52.8% )
198 (0.8%)
has_prev_house_details [factor]
  1. No
  1. Yes
2840 ( 11.3% )
22214 ( 88.7% )
198 (0.8%)
house_years_prev [integer]
Mean (sd) : 20.7 (13.9)
min ≤ med ≤ max:
1 ≤ 20 ≤ 83
IQR (CV) : 18 (0.7)
81 distinct values 3038 (12.0%)
house_years_before_prev [integer]
Mean (sd) : 17 (9.5)
min ≤ med ≤ max:
1 ≤ 19 ≤ 76
IQR (CV) : 12 (0.6)
69 distinct values 12014 (47.6%)
traffic_prox_present [factor]
  1. <50m
  1. 50-100m
  1. 100-200m
  1. 200m
11162 ( 44.6% )
4331 ( 17.3% )
3061 ( 12.2% )
6500 ( 25.9% )
198 (0.8%)
traffic_prox_prev [factor]
  1. <50m
  1. 50-100m
  1. 100-200m
  1. 200m
7259 ( 32.7% )
3123 ( 14.1% )
2454 ( 11.0% )
9378 ( 42.2% )
3038 (12.0%)
traffic_prox_before_prev [factor]
  1. <50m
  1. 50-100m
  1. 100-200m
  1. 200m
3449 ( 26.1% )
1707 ( 12.9% )
1459 ( 11.0% )
6624 ( 50.0% )
12013 (47.6%)
indust_poll_present [factor]
  1. No
  1. Yes
19136 ( 76.4% )
5918 ( 23.6% )
198 (0.8%)
indust_poll_prev [factor]
  1. No
  1. Yes
17951 ( 80.8% )
4263 ( 19.2% )
3038 (12.0%)
indust_poll_before_prev [factor]
  1. No
  1. Yes
11027 ( 83.3% )
2212 ( 16.7% )
12013 (47.6%)
stove_hours_present_x10 [integer]
Mean (sd) : 81.3 (50.9)
min ≤ med ≤ max:
0 ≤ 70 ≤ 490
IQR (CV) : 60 (0.6)
58 distinct values 8566 (33.9%)
cooking_coal_present [factor]
  1. Smokeless coal
  1. Smokey coal
  1. Coal brick / Coalite (smo
  1. Other
838 ( 23.6% )
208 ( 5.9% )
2498 ( 70.4% )
5 ( 0.1% )
21703 (85.9%)
heating_coal_present [factor]
  1. Smokeless coal
  1. Smokey coal
  1. Coal brick / Coalite (smo
  1. Other
796 ( 17.7% )
1826 ( 40.5% )
1880 ( 41.7% )
7 ( 0.2% )
20743 (82.1%)

Generated by summarytools 1.0.1 (R version 4.3.1)
2024-02-27




International Coordinating Centre, China Kadoorie Biobank (CKB), CTSU, Nuffield Department of Population Health, University of Oxford Old Road Campus, Headington, Oxford, OX3 7LF

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Copyright China Kadoorie Biobank (CKB), University of Oxford, (2024)

Page generated: 27-02-2024