Seasonal Variation and Global Public Interest in the Internet Searches for Osteoporosis

Table 1

The seasonal variation in the relative search volume of the osteoporosis.

Country	Amplitude	Phase month	Low point month	value
Worldwide	2.75	2.4	8.4	0.0083
USA	3.54	1.7	7.7	<0.001
UK	5.07	2.1	8.1	<0.001
Canada	7.21	1.5	7.5	<0.001
Ireland	4.43	1.5	7.5	<0.001
Australian	6.8	6.0	12.0	<0.001
New Zealand	4.63	6.1	12.1	<0.001

The cosinor test was used to examine the seasonality. Assignment of each month: January–December corresponding to 1–12. The threshold of significance is adjusted at to control the false discovery rate due to multiple testing in the cosinor analysis. The cosine value is presented.