Table 2.

Studies included in the Meta-Analysis.

Reference	Country	Cases (Exposed/Total)	Controls (Exposed/Total)	Odds Ratio	95% CI
Studies that had samples of predominantly agricultural practices
Baldereschi et al. [37]	Italy	7/113	82/4383	3.33	1.51–7.39
Baldi et al. [38]	France	19/84	38/252	1.64	0.89–3.01
Brighina et al. [25]	USA	303/833	278/833	1.11	0.89–1.38
Chan et al. [39]	Hong Kong	19/215	16/313	1.80	0.90–3.58
Costello et al. [40]	USA	110/368	75/341	1.52	1.08–2.14
Elbaz et al. [27]	France	40/225	48/107	1.80	1.10–3.10
Gorell et al. [41]	USA	NA/144	NA/464	4.10	1.37–12.24
Ritz et al. [42]	USA	93/324	74/334	1.44	1.01–2.06
Rugbjerg et al. [43]	Canada	74/403	47/405	1.76	1.15–2.07
Steenland et al. [44]	Costa Rica	NA	NA	2.57	0.91–7.26
Tanner et al. [45]	USA	23/110	49/358	2.50	1.40–4.70
Wang et al. [46]	USA	46/362	18/341	3.09	1.69–5.64
Other studies that met our inclusion criteria
Dhillon et al. [47]	USA	27/100	3.0/84	10.00	2.90–34.3
Dick et al. [48]	Scotland, Sweden, Italy, Malta, Romania	NA/767	NA/1989	1.25	0.97–1.61
Firestone et al. [49]	USA	19/156	28/241	1.01	0.53–1.92
Fong et al. [50]	Taiwan	85/153	66/155	1.68	1.03–2.76
Frigerio et al. [24]	USA	15/149	10/129	1.30	0.60–3.10
Gatto et al. [51]	USA	270/368	273/341	1.66	1.04–2.66
Hancock et al. [26]	USA	200/319	147/296	1.61	1.13–2.29
Hristina et al. [52]	Serbia	27/110	19/220	3.22	1.32–7.87
Seidler et al. [53]	Germany	59/380	44/379	1.70	1.00–2.60
Semchuck et al. [22]	Canada	32/130	30/260	2.25	1.27–3.99