Table 2.
Association between the search volume and the sarcoidosis incidence as well as selected environmental factors across Sweden’s counties.
| Counties (monthly mean SV/100,000) | Monthly incidence (n/100,000) | Humidity (%) | Monthly temperature (°C) | Monthly sunshine duration (h) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | rs | p | Mean (SD) | rs | p | Mean (SD) | rs | p | Mean (SD) | rs | p | |
| Stockholm (50) | 0.90 (0.23) | 0.38 | 0.008 | 77.54 (11.12) | 0.25 | 0.09 | 7.37 (6.88) | − 0.30 | 0.04 | 170.80 (117.31) | − 0.34 | 0.02 |
| Uppsala (133) | 1.10 (0.60) | − 0.21 | 0.15 | 76.61 (12.81) | 0.24 | 0.10 | 7.99 (7.19) | − 0.34 | 0.02 | 170.80 (118.32) | − 0.29 | 0.05 |
| Södermanland (99) | 0.79 (0.41) | − 0.29 | 0.46 | 71.67 (11.18) | − 0.25 | 0.08 | 7.92 (6.99) | − 0.09 | 0.55 | 163.46 (108.72) | − 0.10 | 0.50 |
| Östergötland (115) | 1.12 (0.51) | 0.17 | 0.25 | 79.35 (10.64) | 0.07 | 0.62 | 8.07 (6.76) | − 0.10 | 0.49 | 163.45 (108.72) | − 0.10 | 0.43 |
| Jöngköping (107) | 1.03 (0.50) | 0.20 | 0.17 | 82.03 (11.04) | 0.28 | 0.06 | 7.53 (6.51) | − 0.16 | 0.28 | 142.02 (102.16) | − 0.26 | 0.08 |
| Kronoberg (114) | 0.80 (0.59) | 0.32 | 0.02 | 81.30 (12.02) | 0.13 | 0.39 | 8.17 (6.55) | − 0.14 | 0.34 | 142.02 (103.16) | − 0.12 | 0.41 |
| Kalmar (118) | 1.04 (0.59) | 0.07 | 0.64 | 81.13 (8.68) | -0.17 | 0.26 | 8.92 (6.31) | 0.22 | 0.13 | 142.03 (102.16) | 0.11 | 0.48 |
| Gotlands (155) | 0.44 (0.82) | 0.04 | 0.98 | 81.92 (8.51) | 0.03 | 0.87 | 8.63 (6.22) | 0.07 | 0.64 | 185.21 (127.54) | − 0.02 | 0.91 |
| Blekinge (131) | 0.76 (0.71) | 0.19 | 0.18 | 82.19 (5.46) | 0.07 | 0.64 | 9.83 (6.23) | − 0.04 | 0.81 | 182.06 (119.10) | − 0.10 | 0.49 |
| Skåne (96) | 1.10 (0.27) | − 0.14 | 0.34 | 78.79 (89.67) | − 0.03 | 0.87 | 10.11 (6.25) | − 0.08 | 0.57 | 152.72 (103.25) | − 0.05 | 0.76 |
| Hallands (104) | 0.70 (0.37) | − 0.14 | 0.33 | 81.62 (8.22) | − 0.03 | 0.85 | 9.79 (6.16) | − 0.23 | 0.11 | 142.02 (102.16) | − 0.15 | 0.31 |
| Västra Götaland (84) | 0.88 (0.23) | 0.17 | 0.24 | 79.79 (11.13) | − 0.01 | 0.94 | 9.85 (6.40) | 0.06 | 0.69 | 150.74 (100.46) | − 0.05 | 0.75 |
| Värmlands (123) | 0.92 (0.70) | − 0.16 | 0.28 | 79.97 (12.26) | 0.07 | 0.62 | 7.35 (6.92) | − 0.10 | 0.49 | 162.97 (108.11) | − 0.09 | 0.57 |
| Örebro (137) | 1.00 (0.51) | − 0.21 | 0.14 | 76.93 (12.01) | − 0.07 | 0.64 | 8.41 (6.91) | − 0.13 | 0.42 | 162.97 (108.11) | − 0.13 | 0.40 |
| Västmanlands (118) | 1.05 (0.60) | − 0.06 | 0.67 | 79.30 (11.99) | 0.02 | 0.88 | 7.94 (7.21) | − 0.03 | 0.86 | 162.97 (108.11) | − 0.03 | 0.85 |
| Dalarns (125) | 1.20 (0.63) | − 0.17 | 0.26 | 78.81 (10.57) | 0.03 | 0.84 | 6.72 (7.62) | − 0.02 | 0.89 | 159.79 (107.65) | − 0.09 | 0.55 |
| Gävleborg (121) | 0.80 (0.58) | 0.13 | 0.49 | 79.21 (9.70) | − 0.07 | 0.64 | 6.73 (6.93) | 0.12 | 0.44 | 159.79 (107.65) | 0.05 | 0.73 |
| Västernorrland (152) | 1.25 (0.70) | 0.43 | 0.002 | 78.98 (10.22) | 0.03 | 0.82 | 4.99 (7.80) | − 0.20 | 0.49 | 167.68 (118.30) | − 0.07 | 0.63 |
| Jämtland (179) | 1.52 (1.26) | 0.06 | 0.70 | 80.33 (10.17) | − 0.25 | 0.09 | 4.03 (7.34) | 0.03 | 0.82 | 141.57 (104.76) | 0.02 | 0.94 |
| Västerbotten (183) | 1.32 (.66) | 0.12 | 0.41 | 81.12 (9.20) | − 0.10 | 0.50 | 4.43 (7.82) | − 0.12 | 0.41 | 167.68 (118.30) | − 0.07 | 0.62 |
| Norrbotten (124) | 0.97 (.60) | − 0.01 | 0.93 | 78.77 (9.09) | − 0.08 | 0.59 | 8.17 (6.55) | − 0.08 | 0.57 | 135.57 (108.14) | 0.10 | 0.48 |
SV, search volume; SD, standard deviation.
Spearman’s correlation coefficient (rs) was used to assess the correlation between search volume and selected environmental factors for Sweden’s counties.