Research Article
Evaluation of Month of Birth in Neuromyelitis Optica Spectrum Disorders (NMSOD) and Multiple Sclerosis (MS)
Table 3
Comparison of numbers of monthly births among different MS types.
(a) |
| Month | RRMS vs. control | SPMS vs. control | PPMS vs. control | OR (95% CI) | | OR (95% CI) | | OR (95% CI) | |
| March-April | 1.572 (1.282-1.927) | <0.001 | 1.773 (1.260-2.493) | 0.001 | 1.741 (0.895-3.385) | 0.102 | April-May | 1.185 (0.937-1.497) | 0.156 | 1.041 (0.660-1.641) | 0.862 | 0.989 (0.390-2.509) | 0.981 | May-June | 1.232 (0.981-1.547) | 0.073 | 1.018 (0.657-1.577) | 0.936 | 2.611 (1.391-4.903) | 0.003 | June-July | 0.920 (0.734-1.153) | 0.470 | 0.927 (0.612-1.402) | 0.718 | 0.566 (0.203-1.576) | 0.276 | July-August | 1.245 (0.986-1.571) | 0.065 | 1.379 (0.909-2.93) | 0.131 | 1.002 (0.395-2.541) | 0.997 | August-September | 1.314 (1.103-1.567) | 0.002 | 1.023 (0.734-1.424) | 0.895 | 0.937 (0.473-1.856) | 0.853 | September-October | 0.482 (0.378-0.614) | <0.001 | 0.410 (0.252-0.669) | <0.001 | 0.513 (0.204-1.292) | 0.157 | October-November | 0.714 (0.534-0.954) | 0.023 | 0.454 (0.225-0.914) | 0.027 | 0.991 (0.352-2.786) | 0.986 | November-December | 0.793 (0.615-1.022) | 0.074 | 0.914 (0.566-1.476) | 0.714 | 1.214 (0.513-2.870) | 0.659 | December-January | 0.747 (0.585-0.955) | 0.020 | 0.614 (0.363-1.038) | 0.069 | 0.879 (0.347-2.226) | 0.785 | January-February | 0.962 (0.738-1.255) | 0.777 | 1.656 (1.074-2.552) | 0.022 | 0.981 (0.349-2.757) | 0.972 | February-March | 0.861 (0.676-1.095) | 0.223 | 1.068 (0.697-1.635) | 0.764 | 0.331 (0.080-1.366) | 0.126 |
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(b) |
| Month | RRMS vs. SPMS | RRMS vs. PPMS | SPMS vs. PPMS | OR (95% CI) | | OR (95% CI) | | OR (95% CI) | |
| March-April | 1.134 (0.818-1.572) | 0.450 | 1.114 (0.577-2.150) | 0.747 | 0.982 (0.486-1.986) | 0.961 | April-May | 0.879 (0.564-1.369) | 0.568 | 0.835 (0.331-2.106) | 0.703 | 0.950 (0.351-2.569) | 0.920 | May-June | 0.819 (0.534-1.256) | 0.360 | 2.099 (1.126-3.913) | 0.020 | 2.563 (1.253-5.245) | 0.010 | June-July | 1.00 (0.662-1.513) | 0.998 | 0.611 (0.220-1.700) | 0.345 | 0.611 (0.208-1.789) | 0.369 | July-August | 1.113 (0.744-1.665) | 0.602 | 0.809 (0.321-2.038) | 0.652 | 0.726 (0.273-1.931) | 0.522 | August-September | 0.785 (0.567-1.085) | 0.143 | 0.720 (0.365-1.421) | 0.343 | 0.917 (0.442-1.903) | 0.817 | September-October | 0.845 (0.509-1.403) | 0.516 | 1.057 (0.416-2.685) | 0.908 | 1.250 (0.451-3.466) | 0.668 | October-November | 0.638 (0.316-1.288) | 0.210 | 1.393 (0.495-3.922) | 0.530 | 2.184 (0.654-7.292) | 0.204 | November-December | 1.145 (0.711-1.844) | 0.578 | 1.520 (0.643-3.588) | 0.340 | 1.327 (0.518-3.398) | 0.555 | December-January | 0.822 (0.486-1.390) | 0.464 | 1.176 (0.464-2.979) | 0.732 | 1.432 (0.511-4.013) | 0.495 | January-February | 1.739 (1.140-2.652) | 0.010 | 1.030 (0.368-2.883) | 0.955 | 0.593 (0.203-1.734) | 0.339 | February-March | 1.235 (0.808-1.889) | 0.329 | 0.382 (0.093-1.579) | 0.184 | 0.310 (0.072-1.327) | 0.114 |
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