Table 1 Sample characteristics (n = 92,856)

Male

48,496 (68.63)

13,004 (58.59)

61,500 (66.23)

Female

22,165 (31.37)

9191 (41.41)

31,356 (33.77)

< 45

3104 (4.39)

1084 (4.88)

4188 (4.51)

45–59

20,977 (29.69)

6913 (31.15)

27,890 (30.04)

60–75

33,836 (47.88)

10,892 (49.07)

44,728 (48.17)

> 75

12,744 (18.04)

3306 (14.9)

16,050 (17.28)

Primary

2668 (3.78)

2177 (9.81)

4845 (5.22)

Secondary

14,694 (20.8)

8785 (39.58)

23,479 (25.29)

Tertiary

53,299 (75.43)

11,233 (50.61)

64,532 (69.5)

East

35,220 (49.84)

10,216 (46.03)

45,436 (48.93)

Central

19,535 (27.65)

7113 (32.05)

26,648 (28.7)

West

15,906 (22.51)

4866 (21.92)

20,772 (22.37)

Yes

19,105 (27.04)

4625 (20.84)

23,730 (25.56)

No

51,556 (72.96)

17,570 (79.16)

69,126 (74.44)

2010

3675 (5.2)

590 (2.66)

4265 (4.59)

2011

5110 (7.23)

917 (4.13)

6027 (6.49)

2012

5247 (7.43)

980 (4.42)

6227 (6.71)

2013

13,725 (19.42)

3297 (14.85)

17,022 (18.33)

2014

13,480 (19.08)

4200 (18.92)

17,680 (19.04)

2015

13,319 (18.85)

5549 (25.00)

18,868 (20.32)

2016

16,105 (22.79)

6662 (30.02)

22,767 (24.52)

Overall

70,661 (76.10)

22,195 (23.9)

92,856