Variable

Category

Number

%

Pain: Number of:

Yes (%)

No (%)

Age (years)

22-35

488

79.7

45 (9.8)

413 (90.2)

36-47

124

20.3

13 (8.4)

141 (91.6)

Maternal

Height (cm)

≤ 160

419

68.5

33 (7.9)

386 (92.1)

> 160

193

31.5

25 (13)

168 (87)

BMI (Kg/m²)

< 25

148

24.2

15 (10.1)

133 (89.9)

25-29.9

344

56.2

30 (8.7)

314 (91.9)

≥ 30

120

19.6

13 (10.8)

107 (89.2)

Gravidity

≤ 2

345

56.4

36 (1.4)

309 (89.6)

> 2

267

43.6

35 (8.4)

232 (91.6)

Term (weeks)

< 40

505

82.5

47 (9.3)

458 (90.7)

≥ 40

107

17.5

11 (10.3)

98 (89.7)

Mother body weight (kg)

≤ 60

83

13.6

10 (12)

73 (88)

> 60

529

86.4

48 (9.1)

481 (90.9)

Baseline SBP (mmhg)

< 120

400

65.4

31 (7.75)

369 (92.25)

> 119

212

34.6

27 (12.74)

185 (81.26)

Site of puncture (lumbar)

L1-2

440

71.9

41 (9.3)

399 (90.7)

L2-3

172

28.1

17 (9.9)

152 (89.1)

LA total dose (ml)

≤ 11

114

18.6

20 (17.5)

90 (82.5)

> 11

498

81.4

38 (7.6)

464 (92.4)

Anaesthesia onset time (min)

≤ 10

417

68.14

40 (9.6)

377 (90.4)

> 10

195

31.86

18 (9.2)

177 (90.8)

Sensory block height (dermatome)

 8

482

78.8

48 (10)

434 (90)

 7

39

6.4

3 (7.69)

36 (92.31)

 6

91

14.9

7 (7.69)

84 (92.31)

Surgery duration (min)

≤ 45

429

89.5

43 (10)

386 (90)

> 45

183

10.5

15 (8.2)

165 (91.6)

Estimated blood loss (ml)

< 500

593

96.9

56 (9.2)

537 (90.6)

≥ 500

19

3.1

2 (10.5)

17 (89.5)