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. 2021 Jul 21;16(7):e0255001. doi: 10.1371/journal.pone.0255001

Table 3. Summary table of studies contributing to each theme according to trustworthiness.

Theme High trustworthiness (n = 36 studies) Medium trustworthiness (n = 48 studies) Low trustworthiness (n = 20 studies)
ANTECEDENTS
Socio-cultural context (n = 71 studies) n = 29 studies [26, 28, 33, 39, 40, 47, 51, 53, 58, 59, 61, 65, 67, 68, 73, 86, 9397, 105, 111, 112, 114, 119122, 132, 135, 137, 139] n = 31 studies [24, 32, 36, 38, 42, 43, 48, 5457, 60, 63, 6972, 7881, 84, 85, 8790, 98, 103, 106, 108110, 116, 117, 127, 128] n = 11 studies [8, 9, 46, 49, 64, 92, 101, 129, 130, 136, 140]
Menstrual stigma, n = 24 studies [28, 33, 40, 47, 53, 58, 59, 61, 67, 68, 73, 86, 9397, 105, 111, 112, 114, 119121, 132, 135, 137, 139] Menstrual stigma, n = 28 studies [24, 32, 38, 42, 48, 5456, 60, 63, 6972, 7881, 84, 85, 8790, 98, 108110, 116, 117, 127, 128] Menstrual stigma, n = 9 studies [8, 9, 49, 64, 92, 101, 129, 130, 136]
Gender norms, n = 23 studies [26, 28, 33, 39, 40, 47, 51, 58, 59, 61, 65, 67, 73, 9397, 105, 111, 114, 119122, 132, 135] Gender norms, n = 26 studies [24, 32, 36, 38, 43, 5457, 60, 63, 69, 71, 78, 80, 81, 85, 87, 88, 98, 103, 106, 108110, 116, 117, 127, 128] Gender norms, n = 7 studies [46, 49, 64, 92, 101, 129, 140]
Behavioural expectations (n = 69 studies) n = 24 studies [28, 33, 40, 47, 51, 53, 58, 59, 65, 67, 68, 7377, 86, 9397, 105, 111, 112, 119122, 139] n = 26 studies [32, 36, 38, 42, 45, 48, 5456, 60, 63, 66, 71, 78, 79, 81, 84, 8789, 106110, 116118, 125, 128, 133, 143] n = 9 studies [8, 35, 41, 49, 50, 64, 92, 129, 136]
Externally enforced, n = 15 studies [33, 51, 58, 65, 67, 73, 86, 9397, 105, 112, 119121] Externally enforced, n = 22 studies [32, 36, 38, 42, 45, 54, 56, 60, 63, 66, 71, 78, 80, 81, 84, 89, 106, 108110, 116, 117, 125, 128, 143] Externally enforced, n = 6 studies [8, 35, 49, 64, 92, 136]
Internally enforced, n = 24 studies [28, 33, 40, 47, 51, 53, 58, 59, 65, 67, 68, 7377, 86, 93, 9597, 105, 111, 112, 119122, 139] Internally enforced, n = 22 studies [32, 38, 48, 5456, 60, 6567, 71, 7881, 84, 8789, 93, 94, 106110, 116118, 125, 128, 133, 143] Internally enforced, n = 6 studies [8, 41, 49, 50, 64, 129]
Social support (n = 83 studies) n = 27 studies [26, 28, 33, 34, 40, 47, 51, 58, 59, 61, 65, 67, 73, 7577, 9397, 99, 105, 111, 112, 114, 119122, 124, 135, 137] n = 39 studies [24, 25, 27, 32, 3638, 42, 43, 48, 5457, 60, 63, 66, 6972, 7881, 84, 85, 8790, 100, 102, 103, 106, 108110, 115118, 125, 127, 128, 138, 143] n = 17 studies [810, 35, 46, 49, 50, 62, 64, 82, 83, 101, 104, 113, 129, 136, 140, 141]
Adolescent boys, n = 7 studies [42, 75, 93, 9597, 99, 114, 121] Adolescent boys, n = 10 studies [32, 54, 78, 81, 8890, 110, 117, 127, 143] Adolescent boys, n = 2 studies [35, 141]
Healthcare workers, n = 16 studies [26, 28, 40, 51, 58, 59, 61, 67, 75, 77, 99, 111, 112, 119, 120, 122, 137] Healthcare workers, n = 13 studies [27, 5557, 63, 71, 80, 81, 85, 100, 103, 106, 128] Healthcare workers, n = 5 studies [8, 46, 64, 101, 129]
Family (not including mothers), n = 11 studies [51, 61, 65, 67, 95, 99, 111, 119, 121, 122, 135] Family (not including mothers), n = 17 studies [25, 32, 38, 43, 54, 56, 57, 60, 63, 71, 87, 89, 90, 103, 106, 109, 110, 127] Family (not including mothers), n = 6 studies [35, 62, 113, 136, 140, 144]
Friends and colleagues, n = 19 studies [28, 40, 47, 51, 61, 65, 67, 75, 76, 94, 95, 97, 99, 105, 112, 114, 119, 121, 122, 124, 135] Friends and colleagues, n = 23 studies [24, 25, 32, 37, 38, 43, 48, 56, 63, 71, 78, 79, 81, 87, 88, 103, 106, 110, 115, 118, 127, 128, 138] Friends and colleagues, n = 7 studies [810, 35, 64, 129, 136, 140]
Intimate partners, n = 10 studies [33, 34, 51, 61, 73, 75, 112, 114, 119, 122, 137] Intimate partners, n = 8 studies [56, 66, 81, 103, 106, 116, 125, 128, 143] Intimate partners, n = 1 study [64]
Mothers, n = 14 studies [34, 47, 61, 65, 76, 9396, 99, 114, 119122, 135] Mothers, n = 25 studies [25, 32, 36, 38, 42, 43, 54, 56, 57, 63, 6972, 79, 81, 84, 88, 102, 106110, 116, 125, 127, 128] Mothers, n = 13 studies [8, 35, 49, 50, 62, 64, 82, 83, 104, 113, 129, 140, 141]
Knowledge (n = 57 studies) n = 20 studies [33, 39, 47, 51, 58, 59, 67, 74, 75, 86, 91, 9397, 99, 105, 114, 119122, 135] n = 27 studies [32, 36, 38, 42, 43, 45, 5557, 60, 63, 6972, 78, 81, 85, 8789, 102, 106, 109, 110, 116, 117, 127, 128] n = 10 studies [8, 35, 41, 50, 64, 104, 130, 136, 140, 141]
Biology, n = 16 studies [39, 58, 59, 65, 67, 74, 75, 91, 9397, 105, 114, 119122, 135] Biology, n = 24 studies [32, 36, 38, 42, 45, 5557, 60, 63, 6972, 81, 85, 87, 89, 102, 106, 109, 110, 116, 127, 128] Biology, n = 10 studies [8, 35, 41, 50, 64, 104, 130, 136, 141]
Reproduction, n = 5 studies [33, 58, 74, 95, 120] Reproduction, n = 8 studies [32, 56, 60, 63, 71, 78, 81, 106] Reproduction, n = 1 study [41]
Physical management, n = 16 studies [39, 47, 51, 58, 86, 91, 9496, 99, 105, 114, 119122, 135] Physical management, n = 17 studies [32, 36, 38, 42, 43, 56, 63, 69, 71, 72, 81, 88, 106, 110, 116, 117, 127] Physical management, n = 4 studies [8, 50, 104, 140]
Resource limitations (n = 31 studies) n = 13 studies [26, 28, 40, 47, 51, 94, 111, 119, 120, 122, 126, 132] n = 16 studies [24, 25, 37, 48, 54, 56, 78, 80, 81, 88, 98, 106, 108, 115, 117, 138, 143] n = 2 studies [810]
Economic environment, n = 5 studies [40, 114, 119, 120, 126] Economic environment, n = 8 studies [37, 48, 56, 81, 98, 106, 117, 143] Economic environment, n = 2 studies [810]
Physical environment, n = 10 studies [26, 28, 47, 51, 94, 111, 120, 122, 126, 132] Physical environment, n = 10 studies [25, 54, 78, 80, 81, 88, 106, 108, 115, 117, 138] Physical environment, n = 1 study [10]
EXPERIENCES
Menstrual practices (n = 71 studies) n = 24 studies [28, 33, 47, 51, 59, 67, 68, 75, 76, 86, 91, 9396, 99, 105, 112, 114, 119123, 126, 132, 135, 137] n = 34 studies [24, 25, 32, 3638, 42, 44, 48, 54, 56, 57, 60, 63, 66, 69, 71, 72, 7881, 84, 88, 89, 102, 106, 108110, 115118, 128, 138, 142, 143] n = 13 studies [810, 41, 46, 50, 64, 82, 83, 92, 104, 113, 136, 140]
Bathing, n = 7 studies [47, 68, 86, 95, 105, 120, 132] Bathing, n = 7 studies [32, 38, 56, 60, 66, 138, 143] Bathing, n = 2 studies [10, 140]
Disposing of materials, n = 9 studies [28, 47, 59, 95, 105, 112, 120, 122, 132, 135] Disposing of materials, n = 10 studies [24, 32, 38, 42, 80, 81, 88, 102, 110, 116, 117, 138] Disposing of materials, n = 2 studies [41, 50]
Obtaining materials, n = 14 studies [47, 59, 67, 75, 76, 9396, 99, 119121, 126, 132, 135] Obtaining materials, n = 18 studies [24, 37, 38, 48, 54, 56, 63, 69, 71, 78, 79, 81, 89, 106, 109, 110, 115117, 138, 143] Obtaining materials, n = 7 studies [810, 50, 64, 82, 83, 113]
Using/wearing materials, n = 14 studies [28, 33, 47, 51, 59, 67, 68, 86, 91, 9396, 105, 112, 114, 119, 120, 122, 123, 126, 135, 137] Using/wearing materials, n = 26 studies [24, 25, 32, 3638, 42, 44, 54, 56, 57, 60, 63, 69, 71, 72, 7881, 84, 88, 89, 102, 106, 108110, 115118, 128, 138, 142] Using/wearing materials, n = 9 studies [810, 41, 46, 49, 50, 64, 82, 83, 92, 104, 113, 136, 140]
Washing/drying materials, n = 6 studies [28, 9395, 105, 114, 132] Washing/drying materials, n = 4 studies [37, 56, 81, 106, 108, 116, 117] Washing/drying materials, n = 2 studies [10, 50]
Perceptions of menstrual practices (n = 55 studies) n = 20 studies [28, 47, 51, 59, 67, 68, 86, 9397, 99, 105, 112, 114, 119123, 126, 132, 137] n = 24 studies [24, 32, 3638, 42, 54, 56, 57, 60, 63, 69, 71, 72, 7881, 84, 88, 106, 108110, 116, 117, 128, 138] n = 11 studies [810, 41, 46, 49, 50, 64, 82, 92, 113, 136]
Bathing, n = 2 studies [47, 105] Bathing, n = 2 studies [56, 143] Bathing, n = 0 studies
Disposing of materials, n = 11 studies [28, 47, 51, 59, 105, 112, 114, 120122, 132] Disposing of materials, n = 7 studies [24, 25, 38, 42, 81, 88, 116, 117] Disposing of materials, n = 2 studies [41, 50]
Obtaining materials, n = 7 studies [67, 94, 96, 119121, 132] Obtaining materials, n = 8 studies [24, 37, 54, 56, 63, 78, 79, 81, 116] Obtaining materials, n = 4 studies [810, 64, 82]
Using/wearing materials (all), n = 18 studies [28, 47, 51, 59, 68, 86, 9396, 99, 105, 112, 114, 119123, 126, 137] Using/wearing materials (all), n = 27 studies [24, 25, 27, 32, 3638, 44, 54, 56, 57, 60, 63, 69, 71, 72, 7881, 84, 88, 106, 108110, 116, 117, 127, 128, 138] Using/wearing materials (all), n = 11 studies [810, 41, 46, 49, 50, 64, 82, 92, 113, 136]
Using/wearing tampons, n = 6 studies [51, 68, 95, 99, 105, 121] Using/wearing tampons, n = 15 studies [27, 32, 36, 37, 44, 56, 63, 69, 7981, 106, 110, 116, 117, 127] Using/wearing tampons, n = 6 studies [41, 49, 50, 64, 82, 113]
Washing/drying materials, n = 2 studies [93, 94, 114] Washing/drying materials, n = 5 studies [37, 56, 81, 106, 108, 116, 117] Washing/drying materials, n = 1 study [50]
Perceptions of physical environment (n = 18 studies) n = 8 studies [26, 28, 47, 51, 111, 122, 126, 132] n = 9 studies [24, 25, 54, 80, 81, 88, 115, 117, 138] n = 1 study [10]
Negative emotional responses (n = 87 studies) n = 33 studies [28, 33, 34, 40, 47, 51, 53, 58, 59, 61, 65, 67, 68, 7377, 86, 91, 9397, 99, 105, 111, 112, 114, 119122, 124, 126, 132, 135, 137, 139] n = 37 studies [24, 25, 27, 32, 3638, 42, 44, 45, 48, 5457, 60, 6972, 7881, 85, 8790, 98, 100, 106, 108110, 116118, 125, 127, 128, 138, 143] n = 17 studies [810, 35, 46, 49, 50, 62, 64, 82, 92, 101, 104, 113, 129, 136, 140, 141]
Bother, n = 16 studies [47, 53, 58, 59, 65, 68, 75, 77, 94, 95, 105, 112, 119, 120, 122, 124, 135] Bother, n = 18 studies [25, 36, 38, 54, 56, 69, 71, 72, 78, 80, 81, 87, 98, 106, 108110, 117, 128, 138] Bother, n = 7 studies [8, 35, 46, 49, 64, 140, 141]
Disgust, n = 16 studies [28, 33, 47, 58, 68, 73, 74, 86, 93, 94, 96, 97, 99, 111, 114, 119121, 132, 135] Disgust, n = 15 studies [32, 38, 5456, 60, 70, 79, 81, 87, 98, 110, 117, 138, 143] Disgust, n = 3 studies [64, 92, 136]
Shame and distress, n = 28 studies [28, 33, 34, 40, 47, 51, 53, 58, 59, 61, 67, 68, 75, 76, 86, 9397, 99, 105, 111, 112, 114, 119121, 132, 135, 137, 139] Shame and distress, n = 27 studies [24, 27, 32, 38, 44, 48, 5456, 69, 71, 72, 7881, 85, 8790, 98, 100, 106, 108110, 116, 117, 125, 127, 128, 143] Shame and distress, n = 13 studies [8, 9, 46, 50, 64, 82, 101, 104, 113, 129, 136, 140, 141]
Positive emotional responses (n = 42 studies) n = 14 studies [26, 33, 40, 47, 68, 7375, 9397, 105, 114, 119, 120, 135] n = 19 studies [27, 32, 37, 43, 54, 56, 60, 63, 6971, 78, 80, 81, 85, 88, 98, 106, 143] n = 9 studies [46, 49, 62, 64, 83, 104, 129, 136, 141]
Pride, n = 0 studies Pride, n = 4 studies [32, 78, 106, 143] Pride, n = 1 study [136]
Relief, n = 11 studies [26, 40, 47, 68, 75, 93, 94, 96, 105, 114, 119, 120, 135] Relief, n = 12 studies [27, 32, 43, 56, 60, 6971, 80, 85, 98, 106] Relief, n = 7 studies [46, 49, 62, 64, 104, 129, 141]
Confidence to engage in other activities during menstruation (n = 16 studies) n = 9 studies [28, 33, 40, 47, 73, 112, 114, 119, 122] n = 7 studies [38, 56, 80, 81, 106, 108, 117, 118] n = 0 studies
Individual menstrual factors (n = 71 studies) n = 29 studies [26, 28, 33, 34, 39, 40, 47, 5153, 58, 59, 61, 65, 67, 73, 7577, 93, 95, 96, 99, 105, 112114, 119122, 124, 135, 137] n = 32 studies [24, 25, 27, 32, 3638, 5456, 60, 63, 69, 71, 72, 78, 80, 81, 85, 87, 100, 102, 103, 106, 107, 109, 110, 116, 127, 128, 133, 134, 138, 142] n = 10 studies [810, 35, 41, 46, 49, 62, 64, 129, 140]
Fatigue, n = 13 studies [33, 34, 40, 51, 61, 76, 77, 111, 114, 119, 120, 122, 137] Fatigue, n = 8 studies [25, 56, 72, 79, 80, 87, 100, 138] Fatigue, n = 3 studies [9, 41, 140]
Gastrological, n = 10 studies [40, 51, 53, 58, 61, 75, 76, 114, 128, 135] Gastrological, n = 7 studies [55, 56, 71, 80, 106, 128, 134] Gastrological, n = 3 studies [8, 49, 140]
Neurological, n = 10 studies [51, 53, 61, 75, 76, 114, 119, 120, 122, 128] Neurological, n = 9 studies [32, 55, 56, 71, 72, 78, 80, 106, 128] Neurological, n = 2 studies [8, 41]
Pain, n = 29 studies [26, 28, 33, 34, 39, 40, 47, 5153, 58, 59, 61, 65, 67, 73, 7577, 93, 95, 96, 99, 105, 112, 114, 119122, 124, 135, 137] Pain, n = 31 studies [24, 25, 27, 32, 3638, 5456, 60, 63, 69, 71, 72, 7881, 85, 87, 102, 103, 106, 107, 109, 110, 116, 127, 128, 133, 134, 138, 142] Pain, n = 9 studies [810, 35, 41, 46, 49, 62, 64, 129]
Pain management (n = 47 studies) n = 24 studies [26, 28, 33, 34, 40, 47, 5153, 58, 59, 61, 65, 67, 73, 75, 77, 93, 105, 112, 114, 119, 120, 122, 137] n = 18 studies [32, 38, 44, 55, 56, 63, 71, 7981, 102, 106, 116, 127, 128, 133, 138, 142] n = 5 studies [810, 41, 64, 129]
Perceptions of pain management, n = 15 studies [33, 34, 40, 47, 51, 53, 58, 61, 67, 73, 77, 105, 119, 120, 122] Perceptions of pain management, n = 12 studies [32, 44, 55, 56, 71, 80, 81, 102, 106, 116, 128, 133] Perceptions of pain management, n = 3 studies [8, 64, 129]
Use of: Use of: Use of:
Alcohol, n = 1 study [93] Alcohol, n = 2 studies [32, 106] Alcohol, n = 0 studies
Heat, n = 9 studies [34, 40, 52, 53, 58, 59, 61, 120, 122] Heat, n = 4 studies [34, 56, 71, 80, 142] Heat, n = 0 studies
Herbal remedies, n = 5 studies [40, 65, 67, 105, 122] Herbal remedies, n = 1 study [55] Herbal remedies, n = 1 study [41]
Hormonal contraceptives, n = 2 studies [51, 58, 61, 77, 105, 120] Hormonal contraceptives, n = 5 studies [56, 80, 81, 116, 133] Hormonal contraceptives, n = 4 studies [8, 10, 64, 129]
Analgesic or anti-inflammatory medicines, n = 17 studies [26, 34, 40, 47, 5153, 58, 61, 67, 75, 77, 112, 114, 120, 122, 137] Analgesic or anti-inflammatory medicines, n = 15 studies [32, 38, 56, 63, 71, 7981, 102, 106, 127, 128, 133, 138, 142] Analgesic or anti-inflammatory medicines, n = 2 studies [64, 129]
Sex, n = 2 studies [33, 73] Sex, n = 1 study [56] Sex, n = 1 study [41]
IMPACTS
Mental burden (n = 36 studies) n = 14 studies [40, 47, 51, 53, 61, 77, 95, 112, 119, 120, 122, 126, 132, 137] n = 22 studies [25, 36, 38, 55, 56, 6971, 7881, 88, 98, 103, 106, 109, 117, 118, 128, 134, 138, 143] n = 4 studies [46, 49, 64, 129]
Participation (n = 72 studies) n = 25 studies [28, 34, 40, 47, 5153, 58, 61, 65, 67, 76, 77, 86, 9396, 99, 105, 111, 112, 114, 119, 120, 122, 135, 137] n = 35 studies [25, 27, 32, 3638, 44, 45, 48, 5457, 60, 63, 71, 72, 7981, 84, 87, 98, 100, 103, 106110, 116118, 127, 128, 134, 138, 143] n = 12 studies [8, 41, 49, 50, 64, 92, 101, 113, 129131, 136, 141]
Participate but would prefer not to, n = 9 studies [40, 47, 53, 58, 61, 77, 105, 112, 122] Participate but would prefer not to, n = 9 studies [56, 63, 80, 98, 100, 106, 107, 109, 128, 138] Participate but would prefer not to, n = 2 studies [8, 64]
Employment is impacted, n = 10 studies [34, 47, 53, 61, 76, 105, 111, 112, 114, 119, 122] Employment is impacted, n = 7 studies [34, 56, 57, 80, 100, 103, 106, 108, 118] Employment is impacted, n = 2 studies [64, 129]
Participation in physical activities is impacted, n = 10 studies [34, 40, 47, 51, 65, 77, 9395, 99, 105, 112] Participation in physical activities is impacted, n = 19 studies [27, 32, 36, 38, 44, 45, 54, 56, 60, 63, 71, 72, 80, 81, 87, 106, 108, 109, 116, 127] Participation in physical activities is impacted, n = 6 studies [8, 41, 49, 50, 113, 141]
Do not participate in ‘cold’ activities, n = 3 studies [65, 94, 95, 105] Do not participate in ‘cold’ activities, n = 7 studies [45, 56, 63, 71, 81, 84, 106, 108] Do not participate in ‘cold’ activities, n = 2 studies [41, 50]
Do not participate in religious practices, n = 3 studies [67, 86, 120] Do not participate in religious practices, n = 2 studies [60, 63] Do not participate in religious practices, n = 2 studies [8, 92]
Do not participate in education, n = 6 studies [34, 47, 58, 61, 65, 122] Do not participate in education, n = 12 studies [32, 36, 48, 56, 63, 71, 80, 87, 103, 107, 127, 143] Do not participate in education, n = 5 studies [8, 49, 64, 101, 129]
Do not participate in social activities, n = 11 studies [34, 40, 58, 61, 65, 9395, 99, 112, 119, 122, 135] Do not participate in social activities, n = 10 studies [36, 38, 45, 48, 71, 72, 80, 81, 87, 106] Do not participate in social activities, n = 3 studies [41, 92, 129]
Relationships (n = 37 studies) n = 15 studies [33, 34, 40, 47, 61, 67, 73, 74, 86, 93, 105, 112, 119, 122, 132, 137] n = 16 studies [24, 25, 32, 38, 55, 56, 60, 69, 71, 78, 80, 81, 88, 100, 106, 116] n = 6 studies [49, 64, 101, 104, 129, 140]
Intimate partner, n = 12 studies [33, 47, 61, 67, 73, 74, 86, 93, 105, 112, 119, 122, 137] Intimate partner, n = 7 studies [38, 56, 60, 80, 81, 100, 116] Intimate partner, n = 2 studies [101, 104]
Friends/family/colleagues, n = 7 studies [34, 40, 47, 61, 93, 119, 132] Friends/family/colleagues, n = 10 studies [24, 25, 32, 55, 56, 69, 71, 78, 88, 106] Friends/family/colleagues, n = 4 studies [49, 64, 129, 140]

Italicised terms provide citations for sub-themes within the overarching themes in the first column.