Table 1.
Baseline characteristics of dogs and cats with and without respiratory disease, proportion of existence of selected household air pollutants, and household PM2.5 measurements
| Dogs | Cats | |||||
|---|---|---|---|---|---|---|
| Variable | Respiratory group (n = 83) | Control group (n = 38) | P | Respiratory group (n = 64) | Control group (n = 17) | P |
| Age (years) | 9.8 ± 3.3 | 7.7 ± 4.3 | .0092 | 8.0 (1–19) | 5.0 (1–14) | .063 |
| Sex (males) | 51.8 (43/83) | 44.7 (17/38) | .47 | 57.8 (37/64) | 52.9 (9/17) | .72 |
| Body weight (kg) | 5.1 (1.5‐44.2) | 10.9 (1.4‐36.2) | <.001 | 4.7 (2.9–10.9) | 4.6 (2.4–7.1) | .49 |
| 9‐point body condition score | 5 (2–8) | 5 (3–7) | .076 | 5 (3–9) | 5 (4–6) | .65 |
| Second‐hand smoke (%) | 33 (27/81) | 18 (7/38) | .093 | 27 (17/64) | 12 (2/17) | .33 |
| Incense burning (%) | 30 (25/83) | 13 (5/38) | .045 | 22 (14/64) | 6 (1/17) | .17 |
| Cooking behavior/fume (%) | 71 (58/82) | 79 (30/38) | .34 | 70 (45/64) | 53 (9/17) | .18 |
| Household chemicals (%) | 2 (2/83) | 5 (2/38) | .59 | 3 (2/63) | 12 (2/17) | .20 |
| Average PM2.5 (μg/m3) | 30.8 (10.8–214.2) | 38.2 (5.4–69.4) | .57 | 38.6 (17.8‐131.2) | 27.4 (15.4–70.0) | .017 |
| Environmental temperature (°C) | 25.2 ± 3.7 | 27.1 ± 2.9 | .0087 | 26.0 ± 3.3 | 27.8 ± 3.0 | .045 |
| Environmental humidity (%) | 65.7 ± 8.5 | 69.3 ± 8.7 | .034 | 64.3 ± 8.1 | 62.3 ± 8.8 | .36 |
| Unacceptable PM2.5 level (%) | 45 (36/80) | 55 (21/38) | .30 | 59 (38/64) | 29 (5/17) | .028 |
Bolded values indicating 2‐tailed P < .05.
Data are presented as mean ± standard deviation, median with range, or percentage with numbers.