. 2016 Dec 28;2016:1081258. doi: 10.1155/2016/1081258

Table 2.

Profile of lung function among foodstuff traders who operated from warehouses (N = 35) and open market (N = 15).

Variables	Mean	SD	Mean difference	t-value	p value
FVC
(i) WT	1.67	0.988	−0.723	−2.654	0.011^∗
(ii) OT	2.39	0.547	−0.723	−2.654	0.011^∗
FEV₁
(i) WT	1.26	0.771	−0.497	−2.240	0.030^∗
(ii) OT	1.75	0.574	−0.497	−2.240	0.030^∗
FEV₁/FVC
(i) WT	81.94	25.722	4.890	0.663	0.510
(ii) OT	77.05	18.737	4.890	0.663	0.510
FEF200–1200
(i) WT	1.84	1.053	−0.341	−1.148	0.047
(ii) OT	2.18	0.699	−0.341	−1.148	0.047
FEF25–75
(i) WT	1.82	1.045	−0.261	−0.890	0.065
(ii) OT	2.08	0.658	−0.261	−0.890	0.065
FEF75–85
(i) WT	1.39	0.728	−0.221	−1.117	−0.007^∗
(ii) OT	1.61	0.344	−0.221	−1.117	−0.007^∗
FEF25
(i) WT	1.90	1.136	−0.569	−1.726	−0.249
(ii) OT	2.47	0.884	−0.569	−1.726	−0.249
FEF50
(i) WT	1.91	1.085	−0.242	−3.958	0.001^∗
(ii) OT	2.15	0.688	−0.242	−3.958	0.001^∗
FEF75
(i) WT	1.56	0.866	−0.21	−0.915	0.041^∗
(ii) OT	1.78	0.444	−0.21	−0.915	0.041^∗
PEF
(i) WT	2.22	1.139	−0.457	−1.401	0.168
(ii) OT	2.68	0.825	−0.457	−1.401	0.168

∗ indicates significance at p < 0.05; WT: warehouse foodstuff traders; OT: open market foodstuff traders.