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. 2021 Feb 8;162(9):2376–2385. doi: 10.1097/j.pain.0000000000002223

Table 2.

Clinical response to nitroglycerin administration.

MIG group HC group P
Nonspecific headache
 N 14 (58.3%) 10 (52.6%) χ2df 1 0.140; P = 0.764
 Latency (min) 15.4 ± 7.2 16.5 ± 7.8 F1,22 0.137; P = 0.715
 Intensity 2.1 ± 0.7 2.0 ± 0.9 F1,22 0.167; P = 0.687
Specific, migraine-like headache
 N 16 (66.7%) 0 (0%)
 Latency (min) 97.8 ± 102.6
 Intensity 6.8 ± 1.5
Specific, migraine-like headache showing onset within 180-minute observation period
 N 13 (52.2%) 0 (0%)
 Latency (min) 56.9 ± 49.7
 Intensity 6.5 ± 1.6

MIG group: subjects with episodic migraine (n = 24); HC group: healthy controls (n = 19). Intensity was rated on a numerical rating scale graded from 0 (no pain) to 10 (excruciating pain).

HC, healthy controls; MIG, migraine; NTG, nitroglycerin.