Table 3 Distribution of answers in hot and other regions stratified by respondents’ living condition (i.e. single or not).

9

Single: 115/163 (70.6%)

Others: 578/749 (77.2%)

Single: 141/190 (74.2%)

Others: 712/974 (73.1%)

Single: − 0.1832 (− 0.5608 ÷ 0.1944)

Others: 0.2182 (− 0.1364 ÷ 0.5727)

Single: − 0.9511 (0.3415)

Others: 1.2061 (0.2278)

10

Single: 124/163 (76.1%)

Others: 475/749 (63.4%)

Single: 143/190 (75.3%)

Others: 599/974 (61.5%)

Single: 0.0440 (− 0.3453 ÷ 0.4334)

Others: 0.0819 (− 0.2721 ÷ 0.4358)

Single: 0.2216 (0.8246)

Others: 0.4533 (0.6503)

20

Single: 56/155 (36.1%)

Others: 195/710 (27.5%)

Single: 54/182 (29.7%)

Others: 290/925 (31.4%)

Single: 0.2933 (− 0.0736 ÷ 0.6601)

Others: − 0.1874 (− 0.5345 ÷ 0.1596)

Single: 1.5670 (0.1171)

Others: − 1.0585 (0.2898)

22

Single: 35/155 (22.6%)

Others: 215/710 (30.3%)

Single: 36/182 (19.8%)

Others: 237/925 (25.6%)

Single: 0.1679 (− 0.2412 ÷ 0.5771)

Others: 0.2318 (− 0.1617 ÷ 0.6253)

Single: 0.8045 (0.4211)

Others: 1.1547 (0.2482)

23

Single: 83/155 (53.5%)

Others: 411/710 (57.9%)

Single: 93/182 (51.1%)

Others: 525/925 (56.8%)

Single: 0.0982 (− 0.2508 ÷ 0.4473)

Others: 0.0462 (− 0.2722 ÷ 0.3646)

Single: 0.5515 (0.5813)

Others: 0.2845 (0.7760)

31

Single: 4/150 (2.7%)

Others: 26/677 (3.8%)

Single: 3/178 (1.7%)

Others: 21/892 (2.4%)

Single: 0.4689 (− 0.5990 ÷ 1.5367)

Others: 0.5047 (− 0.7159 ÷ 1.7253)

Single: 0.8606 (0.3895)

Others: 0.8105 (0.4176)

32

Single: 23/150 (15.3%)

Others: 88/677 (13.0%)

Single: 25/178 (14.0%)

Others: 91/892 (10.2%)

Single: 0.1029 (− 0.3946 ÷ 0.6003)

Others: 0.2739 (− 0.2013 ÷ 0.7491)

Single: 0.4053 (0.6853)

Others: 1.1298 (0.2586)

33

Single: 47/150 (31.3%)

Others: 158/677 (23.3%)

Single: 49/178 (27.5%)

Others: 213/892 (23.9%)

Single: 0.1834 (− 0.2049 ÷ 0.5717)

Others: − 0.0300 (− 0.3931 ÷ 0.3332)

Single: 0.9259 (0.3545)

Others: − 0.1618 (0.8715)

34

Single: 40/150 (26.7%)

Others: 142/677 (21.0%)

Single: 38/178 (21.3%)

Others: 174/892 (19.5%)

Single: 0.2925 (− 0.1140 ÷ 0.6989)

Others: 0.0910 (− 0.3039 ÷ 0.4859)

Single: 1.4103 (0.1584)

Others: 0.4515 (0.6516)

35

Single: 59/150 (39.3%)

Others: 206/677 (30.4%)

Single: 43/178 (24.2%)

Others: 250/892 (28.0%)

Single: 0.7108 (0.3445 ÷ 1.0770)

Others: 0.1161 (− 0.2569 ÷ 0.4892)

Single: 3.8037 (0.0001)*

Others: 0.6103 (0.5417)

36

Single: 79/150 (52.7%)

Others: 339/677 (50.1%)

Single: 89/178 (50.0%)

Others: 456/892 (51.1%)

Single: 0.1068 (− 0.2474 ÷ 0.4609)

Others: − 0.0419 (− 0.3637 ÷ 0.2799)

Single: 0.5909 (0.5546)

Others: − 0.2552 (0.7986)

37

Single: 52/150 (34.7%)

Others: 220/677 (32.5%)

Single: 55/178 (30.9%)

Others: 324/892 (36.3%)

Single: 0.1711 (− 0.2016 ÷ 0.5439)

Others: − 0.1697 (− 0.5157 ÷ 0.1763)

Single: 0.8998 (0.3682)

Others: − 0.9612 (0.3364)

38

Single: 62/150 (41.3%)

Others: 290/677 (42.8%)

Single: 63/178 (35.4%)

Others: 343/892 (38.5%)

Single: 0.2516 (− 0.1073 ÷ 0.6105)

Others: 0.1818 (− 0.1537 ÷ 0.5174)

Single: 1.3741 (0.1694)

Others: 1.0621 (0.2882)

39

Single: 51/150 (34.0%)

Others: 209/677 (30.9%)

Single: 55/178 (30.9%)

Others: 299/892 (33.5%)

Single: 0.1416 (− 0.2336 ÷ 0.5167)

Others: − 0.1214 (− 0.4684 ÷ 0.2256)

Single: 0.7396 (0.4595)

Others: − 0.6856 (0.4930)

40

Single: 27/150 (18.0%)

Others: 101/677 (14.9%)

Single: 26/178 (14.6%)

Others: 141/892 (15.8%)

Single: 0.2494 (− 0.2177 ÷ 0.7166)

Others: − 0.0683 (− 0.5215 ÷ 0.3849)

Single: 1.0466 (0.2953)

Others: − 0.2956 (0.7675)

41

Single: 10/150 (6.7%)

Others: 32/677 (4.7%)

Single: 9/178 (5.1%)

Others: 49/892 (5.5%)

Single: 0.2936 (− 0.4396 ÷ 1.0268)

Others: − 0.1584 (− 0.8881 ÷ 0.5714)

Single: 0.7849 (0.4325)

Others: − 0.4254 (0.6705)

42

Single: 51/150 (34.0%)

Others: 218/677 (32.2%)

Single: 64/178 (36.0%)

Others: 328/892 (36.8%)

Single: − 0.0860 (− 0.4603 ÷ 0.2883)

Others: − 0.2025 (− 0.5375 ÷ 0.1325)

Single: − 0.4502 (0.6526)

Others: − 1.1847 (0.2361)