. 2023 Mar 21;11:1137196. doi: 10.3389/fpubh.2023.1137196

Table 3.

Association between air pollution and cause-specific hospitalization risk.

Specific cause	Single O₃ model	Single PM₁₀ model	Two-pollutant model
	Single O₃ model	Single PM₁₀ model	O ₃	PM ₁₀
	HR (95% CI)	HR (95% CI)	HR (95% CI)	HR (95% CI)
Circulatory system diseases	1.048 (1.022,1.074)	1.025 (0.991,1.061)	1.047 (1.022,1.073)	1.023 (0.989,1.058)
Respiratory system diseases	0.985 (0.940,1.031)	1.080 (1.015,1.149)	0.984 (0.940,1.029)	1.081 (1.016,1.149)
Digestive system diseases	1.104 (1.059,1.152)	1.069 (1.010,1.132)	1.100 (1.056,1.147)	1.064 (1.004,1.128)
Endocrine, nutritional and metabolic diseases	1.109 (1.051,1.172)	0.981 (0.909,1.059)	1.111 (1.052,1.174)	0.974 (0.901,1.053)