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Table 1 Demographic characteristics of participants and meteorological factors

From: Association between weather and utilisation of physical therapy in patients with osteoarthritis: a case-crossover study

Characteristics (n = 8,130)

Mean ± SD or Number (%)

Age (years)

59.78 ± 14.71

Gender: female (%)

5,258 (65%)

Frequency of PT (times/month)

5.07 ± 5.79

Quartile

25

50

75

0.90

2.80

6.91

Meteorological factors

Mean ± SD

Mean temperature (°C)

23.04 ± 4.77

Daily highest temperature (°C)

31.35 ± 3.75

Daily minimum temperature (°C)

20.62 ± 6.18

Diurnal temperature range (°C)

2.97 ± 0.65

Relative humidity (%)

76.74 ± 5.86

Barometric pressure (hPa)

1,004.73 ± 15.78

Daily precipitation (mm)

2.29 ± 2.19