Table 8.

Age-dependent behavioral and psychological effects of air pollution on the students

Age ranges	Yes		No		p-value*	χ2
	N	%	n	%
Feeling sad, depressed, and unpleasant during hazy climate
16–20	1198	91.7	109	8.3	0.000a	408.62
21–25	550	78.9	147	21.1
26–30	1194	86.1	193	13.9
31–35	290	60.7	188	39.3
≥ 36	65	42.8	87	57.2
Haze affecting the daily routine exercise
16–20	1182	90.4	125	9.6	0.000a	337.38
21–25	640	91.8	57	8.2
26–30	1188	95.7	199	14.3
31–35	375	78.5	103	21.5
≥ 36	59	38.8	93	61.2
Haze affecting routine exercise speed
16–20	1202	92.0	105	8.0	0.000a	140.54
21–25	646	92.7	51	7.3
26–30	1235	89.0	152	11.0
31–35	389	81.4	89	18.6
≥ 36	98	64.5	54	35.5
Anxiety and depression
16–20	928	71.0	379	29.0	0.000a	125.54
21–25	548	78.6	149	21.4
26–30	1120	80.7	267	19.3
31–35	375	78.5	103	21.5
≥ 36	66	43.4	86	56.6
Aggression/aggressive behavior
16–20	1164	89.1	143	10.9	0.000a	281.86
21–25	592	84.9	105	15.1
26–30	1185	85.4	202	14.6
31–35	279	58.4	199	41.6
≥ 36	96	63.2	56	36.8
More aggressive in colder days/season
16–20	456	34.9	851	65.1	0.000a	125.2
21–25	121	17.4	576	82.6
26–30	389	28.0	998	72.0
31–35	65	13.6	413	86.4
≥ 36	28	18.4	124	81.6
More aggressive in hotter/warmer days/season
16–20	1032	79.0	275	21.0	0.000a	27.52
21–25	554	79.5	143	20.5
26–30	1042	75.1	345	24.9
31–35	391	81.8	87	18.2
≥ 36	98	64.5	54	35.5

^*Bold value represents p-value < 0.05

^ap-value < αaltered (significant after Bonferroni adjustment)