Effects of indoor particulate matter level/coal smoke on respiratory health in selected earlier studies on adults
| First author [ref no.] | Country of study | Risk factor | Disease/condition | OR (95% CI) |
| Simoni 23 | Italy | PM2.5 (over median value versus under median value) | Chronic bronchitic and/or asthmatic symptoms | 1.83 (1.26–2.65) |
| Irritative symptoms | 1.68 (1.22–2.31) | |||
| Lung function (PEF variation) | ||||
| Max amplitude: | 1.23 (1.03–1.48) | |||
| Diurnal variation: | 1.26 (1.05–1.51) | |||
| Xu 14 | China | Use of coal stove | Respiratory symptoms | |
| Either cooking or heating versus no | 1.5 (1.0–2.3) | |||
| Both cooking and heating versus no/never smokers | 2.1 (1.5–3.1) | |||
| Venners 24# | China | Median indoor PM10 µg·m−3 | Chronic phlegm (males) | |
| Rural Anging versus ref | 4.96 (2.13–11.54) | |||
| Beijing versus ref | 8.78 (4.49–17.18) | |||
| Wheeze (males) | ||||
| Rural Anging versus ref | 3.99 (1.77–8.91) | |||
| Beijing versus ref | 5.26 (2.71–10.21) | |||
| Chronic phlegm (females) | ||||
| Rural Anging versus ref | 1.52 (0.52–4.45) | |||
| Beijing versus ref | 8.93 (3.56–22.43) | |||
| Wheeze (females) | ||||
| Rural Anging versus ref | 2.91 (1.18–7.18) | |||
| Beijing versus ref | 8.28 (3.66–18.74) |
PM10: particles with a 50% cut-off aerodynamic diameter of 10 µm
PM2.5: particles with a 50% cut-off aerodynamic diameter of 2.5 µm
PEF: peak expiratory flow
OR: odds ratio
CI: confidence interval
#: Subjects (239 Anging City (reference (ref)); 248 rural Anging; 557 Beijing)