Table 2 Characteristics of samples

Socio-demographic

Age (year); Median (IQR)

51 (40 – 62) yr

51 (39 – 61) yr

52 (41 – 63) yr

Gender

 Female

346 569 (62.5%)

221 554 (62.5%)

125 015 (62.7%)

 Male

207 564 (37.5%)

133 094 (37.5%)

74 470 (37.3%)

Marital status

 Single

202 258 (36.5%)

131 574 (37.1%)

70 684 (35.4%)

 Married

351 875 (63.5%)

226 265 (63.8%)

125 610 (63.0%)

Employment status

 Employed

461 039 (83.2%)

294 358 (83.0%)

166 681 (83.6%)

 Unemployed

93 094 (16.8%)

61 354 (17.1%)

31 740 (15.9%)

Income

 Low

231 384 (41.8%)

148 598 (41.9%)

82 786 (41.5%)

 Middle

193 578 (34.9%)

123 559 (34.8%)

70 019 (35.1%)

 High

129 312 (23.3%)

82 633 (23.3%)

46 679 (23.4%)

Residence area

 Urban

434 839 (78.5%)

278 044 (78.4%)

156 795 (78.6%)

 Rural

119 294 (21.5%)

76 604 (21.6%)

42 690 (21.4%)

Ethnicity

 Arab

184 614 (33.3%)

117 388 (33.1%)

67 226 (33.7%)

 Fars

179 450 (32.4%)

115 615 (32.6%)

63 835 (32.0%)

 Lor

167 548 (30.2%)

107 104 (30.2%)

60 444 (30.3%)

 Tork & Kord

22 521 (4.1%)

14 541 (4.1%)

7 980 (4.0%)

Prescriptions

Season

 Spring

132 991 (24.0%)

85 115 (24.0%)

47 876 (24.0%)

 Summer

131 130 (23.7%)

84 052 (23.7%)

47 078 (23.6%)

 Autumn

146 491 (26.4%)

93 627 (26.4%)

52 864 (26.5%)

 Winter

143 521 (25.9%)

91 854 (25.9%)

51 667 (25.9%)

TPS $; Median (IQR), per persc/y

4.4 (2.1 – 10.3) $

2.9 (1.5 – 6.7) $

7.7 (4.4 – 14.8) $

NOP; Median (IQR), per year

2.7 (1.4 – 4.3)

2.6 (1.4 – 4.3)

2.7 (1.5 – 4.4)

NOD; Median (IQR), per persc/y

4.7 (2.1 – 6.4)

3.8 (2.5 – 5.6)

4.2 (3.7 – 7.1)

ICPD $; Median (IQR), per persc/y

1.3 (0.9 – 1.8)$

1.3 (0.9 – 1.8)$

1.4 (0.9 – 1.9)$

NVGP; Median (IQR), per year

2.2 (1.4 – 4.6)

2.1 (2.0 – 3.9)

2.2 (2.0 – 4.1)

NVS; Median (IQR), per year

2.3 (1.5 – 4.7)

2.2 (1.9 – 3.7)

2.3 (2.1 – 4.1)

Comorbidity

Any comorbidity

169 942 (30.7%)

107 104 (30.2%)

62 838 (31.5%)

DM

47 943 (8.7%)

29 790 (8.4%)

18 153 (9.1%)

Asthma

46 592 (8.4%)

29 436 (8.3%)

17 156 (8.6%)

DLP

363 135 (65.5%)

230 876 (65.1%)

132 259 (66.3%)

HTN

209 751 (37.9%)

130 156 (36.7%)

79 595 (39.9%)

GERD

239 518 (43.2%)

152 144 (42.9%)

87 374 (43.7%)

CVD

30 699 (5.5%)

17 732 (5.0%)

12 967 (6.9%)

CKD

47 079 (8.5%)

28 726 (8.1%)

18 353 (9.2%)

RA

4 581 (0.8%)

2 766 (0.8%)

1 815 (0.9%)

MHC

119 892 (21.6%)

76 604 (21.6%)

43 288 (21.7%)